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Tracking and Data Relay Satellite System

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The U.S. Tracking and Data Relay Satellite System ( TDRSS , pronounced "T-driss") is a network of American communications satellites (each called a tracking and data relay satellite , TDRS) and ground stations used by NASA for space communications. The system was designed to replace an existing network of ground stations that had supported all of NASA's crewed flight missions. The prime design goal was to increase the time spacecraft were in communication with the ground and improve the amount of data that could be transferred. Many Tracking and Data Relay Satellites were launched in the 1980s and 1990s with the Space Shuttle and made use of the Inertial Upper Stage , a two-stage solid rocket booster developed for the shuttle. Other TDRS were launched by Atlas IIa and Atlas V rockets.

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72-673: The most recent generation of satellites provides ground reception rates of 6 Mbit/s in the S-band and 800 Mbit/s in the Ku- and Ka-bands . This is mainly used by the United States military. In 2022 NASA announced that it would gradually phase out the TDRS system and rely on commercial providers of communication satellite services. To satisfy the requirement for long-duration, highly available space-to-ground communications, NASA created

144-450: A backup fiber-optic link to transfer data between sites in case of emergency. Each ground station has 19-meter dishes, known as Space-Ground Link Terminals (SGLT), to communicate with the satellites. Three SGLTs are located at STGT, but only two are located at WSGT. The system architects moved the remaining SGLT to Guam to provide full network support for the satellite covering the ZOE. Considered

216-592: A broad range of scientific questions generally classified around four key areas: Earth sciences, astrophysics, heliophysics, and the Solar System. To simplify, Goddard studies Earth and Space. Within the Earth sciences area, Goddard plays a major role in research to advance our understanding of the Earth as an environmental system, looking at questions related to how the components of that environmental system have developed, how they interact and how they evolve. This

288-523: A console based workspace for various network elements to collaborate and provide the highest possible level of service to NASA and its customers. Some of the network elements included in the NSOCC support structure are Flight Dynamics Facility (FDF), Human Space Flight (HSF), Launch Vehicles (LV), and Robotics mission support leadership, Search and Rescue (SAR), and “Data Acquisition Processing and Handling Network Environment (DAPHNE+). The Goddard Visitor Center

360-642: A lead role for the project in its early days and managed the first 250 employees involved in the effort, who were stationed at Langley Research Center in Hampton, Virginia . However, the size and scope of Project Mercury soon prompted NASA to build a new Manned Spacecraft Center, now the Johnson Space Center , in Houston , Texas. Project Mercury's personnel and activities were transferred there in 1961. Goddard Space Flight Center remained involved in

432-630: A mission, and Goddard engineers and technicians can design and build the spacecraft for that mission. Goddard scientist John C. Mather shared the 2006 Nobel Prize in Physics for his work on COBE . GSFC also operates two spaceflight tracking and data acquisition networks (the Space Network and the Near Earth Network ), develops and maintains advanced space and Earth science data information systems, and develops satellite systems for

504-811: A range of partners. One of the instruments, the Lunar Orbiter Laser Altimeter (LOLA), was developed by Goddard. LOLA measures landing site slopes and lunar surface roughness in order to generate a 3-D map of the Moon. Another mission to be managed by Goddard is MAVEN . MAVEN is the second mission within the Mars Scout Program that is exploring the atmosphere of Mars in support of NASA's broader efforts to go to Mars. MAVEN carries eight instruments to measure characteristics of Mars' atmospheric gases, upper atmosphere, solar wind , and ionosphere . Instrument development partners include

576-611: A remote part of the WSGT, the distance and location of the SGLT is transparent to network users. The Guam Remote Ground Terminal (GRGT) 13°36′53″N 144°51′23″E  /  13.6148°N 144.8565°E  / 13.6148; 144.8565 is an extension of the WSGT. The terminal contains SGLT 6, with the Communication Service Controller (CSC) located at STGT's TDRS Operations Control Center (TOCC). Before

648-531: A requirement for a higher performance space-based communication system arose. At the end of the Apollo program, NASA realized that MSFN and STADAN had evolved to have similar capabilities and decided to merge the two networks to create the Spacecraft Tracking and Data Network (STDN). Even after consolidation, STDN had some drawbacks. Since the entire network consisted of ground stations spread around

720-537: A set of scientific questions to be answered, and a set of scientific requirements for the mission, which build on what has already been discovered by prior missions. Scientific requirements spell out the types data that will need to be collected. These scientific requirements are then transformed into mission concepts that start to specify the kind of spacecraft and scientific instruments need to be developed for these scientific questions to be answered. Within Goddard,

792-438: A spacecraft under a certain altitude (646 nautical miles). With the addition of another satellite to cover the ZOE and ground station nearby, 100% coverage could exist. The space-based network study created a system that became the plan for the present-day TDRSS network design. As early as the 1960s, NASA's Application Technology Satellite (ATS) and Advanced Communications Technology Satellite (ACTS) programs prototyped many of

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864-659: A spacecraft's orientation relative to known objects (Sun, Moon, stars or Earth's magnetic field). Tracking network support analyzes and evaluates the quality of the tracking data. The space segment of the TDRSS constellation is the most dynamic part of the system. Even with nine satellites on orbit, the system provides support with three primary satellites, while using the rest as on-orbit spares capable of immediate usage as primaries. The original TDRSS design had two primary satellites, designated TDE, for east , and TDW, for west and one on-orbit spare. The surge in user requirements during

936-508: A tetrahedral formation. Each of the four spacecraft carries identical instrument suites. MMS is part of a larger program (Solar Terrestrial Probes) that studies the impact of the Sun on the Solar System. In many cases, Goddard works with partners (US Government agencies, aerospace industry, university-based research centers, other countries) that are responsible for developing the scientific instruments. In other cases, Goddard develops one or more of

1008-618: A train station with access to the Washington Metro system and the MARC commuter train's Camden line. The High Bay Cleanroom located in building 29 is the world's largest ISO 7 cleanroom with 1.3 million cubic feet (37,000 m ) of space. Vacuum chambers in adjacent buildings 10 and 7 can be chilled or heated to ±200 °C (392 °F). Adjacent building 15 houses the High Capacity Centrifuge which

1080-631: A variety of space science disciplines. Goddard's most famous project is the Hubble Space Telescope , a unique science platform that has been breaking new ground in astronomy for nearly 20 years. Other missions such as the Wilkinson Microwave Anisotropy Probe (WMAP) study the structure and evolution of the universe. Other missions such as the Solar and Heliospheric Observatory (SOHO) are currently studying

1152-764: A very low precipitation level. WSGT went online with the 1983 launch of TDRS-A by the Space Shuttle Challenger. STGT became operational in 1994, completing the system after Flight-6's on-orbit checkout earlier in the year. Additionally, after completion of the second terminal, NASA held a contest to name the two stations. Local middle school students chose Cacique (kah-see-keh), meaning leader for WSGT, and Danzante meaning dancer for STGT. These names seem to have been for publicity purposes only, for official NASA documentation use WSGT and STGT or WSC as designators. WSGT and STGT are geographically separated and completely independent of one another, while retaining

1224-433: Is a NASA department founded in 1992 as part of their Systems Reliability and Safety Office at Goddard Space Flight Center. Its purpose was "to become a center of excellence in software assurance, dedicated to making measurable improvement in both the quality and reliability of software developed for NASA at GSFC". The center has been the source of research papers on software metrics, assurance, and risk management. While NASA

1296-550: Is a cost-effect wide area network telecommunications service for transmission of data, video, and voice for all NASA enterprises, programs and centers. This part of the STDN consists of infrastructure and computers dedicated to monitor network traffic flow, such as fiber optic links, routers and switches. Data can flow through NISN two ways: using the Internet Protocol Operational Network (IPONET) or

1368-455: Is a major NASA space research laboratory located approximately 6.5 miles (10.5 km) northeast of Washington, D.C., in Greenbelt, Maryland , United States. Established on May 1, 1959, as NASA's first space flight center, GSFC employs about 10,000 civil servants and contractors. Named for American rocket propulsion pioneer Robert H. Goddard , it is one of ten major NASA field centers. GSFC

1440-654: Is all important to enable scientists to understand the practical impacts of natural and human activities during the coming decades and centuries. Within Space Sciences, Goddard has distinguished itself with the 2006 Nobel Physics Prize given to John Mather and the COBE mission. Beyond the COBE mission, Goddard studies how the universe formed, what it is made of, how its components interact, and how it evolves. The center also contributes to research seeking to understand how stars and planetary systems form and evolve and studies

1512-559: Is also used to provide launch data relay for expendable boosters. As early as 1989, it was reported that an important function of TDRSS was to provide data relay for the Lacrosse radar imaging reconnaissance satellites operated by the National Reconnaissance Office . Almost twenty years later, on November 23, 2007, an on-line trade publication noted, "While NASA uses the (TDRSS) satellites to communicate with

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1584-648: Is briefly mentioned in the James Bond movie, Moonraker . It is also brought up in the 1997 movie Event Horizon . Note: while a TDRSS satellite is in the manufacturing process it is given a letter designation, but once it has successfully achieved the correct geosynchronous orbit it is referred to with a number (for example, TDRS-A during development and before on-orbit acceptance, and TDRS-1 after acceptance on orbit and put into operational use). Thus, satellites that are lost in launch failures or have massive malfunctions are never numbered (for example, TDRS-B , which

1656-665: Is capable of generating 30   G on up to a 2.3-tonne (2.5-short-ton) load. Parsons Corporation assisted in the construction of the Class 10,000 cleanroom to support Hubble Space Telescope as well as other Goddard missions. The High Energy Astrophysics Science Archive Research Center (HEASARC) is NASA 's designated center for the archiving and dissemination of high energy astronomy data and information. Information on X-ray and gamma ray astronomy and related NASA mission archives are maintained for public information and science access. The Software Assurance Technology Center (SATC)

1728-703: Is located at White Sands Missile Range , assumed to be at the White Sands TDRSS station. The first seven TDRSS satellites were built by the TRW corporation (now part of Northrop Grumman Aerospace Systems) in Redondo Beach, California , and all of the satellites since then by Hughes Space and Communications, Inc. , in El Segundo, California , (now a part of the Boeing corporation). The TDRSS system

1800-501: Is one of the largest concentrations of the world's premier space scientists and engineers. The center is organized into 8 directorates, which includes Applied Engineering and Technology, Flight Projects, Science and Exploration, and Safety & Mission Assurance. Co-op students from universities in all 50 States can be found around the campus every season through the Cooperative Education Program. During

1872-479: Is open to the public Tuesdays through Sundays, free of charge, and features displays of spacecraft and technologies developed there. The Hubble Space Telescope is represented by models and deep space imagery from recent missions. The center also features a Science On a Sphere projection system. The center also features an Educator's Resource Center available for use by teachers and education volunteers such as Boy and Girl Scout leaders, and hosts special events during

1944-832: Is organized into several directorates , each charged with one of these key functions. On May 1, 1959, the center was renamed the Goddard Space Flight Center (GSFC) for Robert H. Goddard . Its first 157 employees transferred from the United States Navy 's Project Vanguard missile program, and continued their work at the Naval Research Laboratory in Washington, D.C., while the center was under construction. Goddard Space Flight Center contributed to Project Mercury , America's first human spaceflight program. The Center assumed

2016-758: Is partially within the former Goddard census-designated place ; it has a Greenbelt mailing address. GSFC is the largest combined organization of scientists and engineers in the United States dedicated to increasing knowledge of the Earth , the Solar System , and the Universe via observations from space. GSFC is a major US laboratory for developing and operating uncrewed scientific spacecraft. GSFC conducts scientific investigation, development, manufacturing and operation of space systems, and development of related technologies. Goddard scientists can develop and support

2088-477: Is responsible for the construction of TDRS K. TDRSS is similar to most other space systems, whereby it is composed of three segments: the ground, space and user segments. These three segments work in conjunction to accomplish the mission. An emergency or failure in any one segment could have catastrophic impact on the rest of the system. For this reason all segments have redundancy factored in. The ground segment of TDRSS consists of three ground stations located at

2160-679: The Cosmic Background Explorer , provided unique scientific data about the early universe. Goddard currently supports the operation of dozens of spacecraft collecting scientific data. These missions include Earth science projects like the Earth Observing System (EOS) that includes the Terra , Aqua , and Aura spacecraft flying alongside several projects from other Centers or other countries. Other major Earth science projects that are currently operating include

2232-584: The James Webb Space Telescope , which was launched in 2022 and enables investigations across many fields of astronomy and cosmology, such as observation of the first stars and the formation of the first galaxies. The Goddard community continually works on numerous operations and projects that have launch dates ranging from the upcoming year to a decade down the road. These operations also vary in what scientists hope they will uncover. NASA's missions (and therefore Goddard's missions) address

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2304-625: The National Aeronautics and Space Act of 1958 calls for "the establishment of long-range studies of the potential benefits to be gained from, the opportunities for, and the problems involved in the utilization of aeronautical and space activities for peaceful and scientific purposes." Because of this mandate, the Technology Utilization Program was established in 1962 which required technologies to be brought down to Earth and commercialized in order to help

2376-828: The National Oceanic and Atmospheric Administration (NOAA). GSFC manages operations for many NASA and international missions including the James Webb Space Telescope (JWST) and Hubble Space Telescope (HST), the Explorers Program , the Discovery Program , the Earth Observing System (EOS), INTEGRAL , MAVEN , OSIRIS-REx , the Solar and Heliospheric Observatory ( SOHO ), the Solar Dynamics Observatory ( SDO ), Tracking and Data Relay Satellite System (TDRS) , Fermi , and Swift . Past missions managed by GSFC include

2448-493: The Rossi X-ray Timing Explorer ( RXTE ), Compton Gamma Ray Observatory , SMM , COBE , IUE , and ROSAT . Founded as Beltsville Space Center, Goddard was NASA's first of four space centers . Its original charter was to perform five major functions on behalf of NASA: technology development and fabrication, planning, scientific research , technical operations, and project management. The center

2520-586: The Solar System . The center's contribution to the Earth Science Enterprise includes several spacecraft in the Earth Observing System fleet as well as EOSDIS , a science data collection, processing, and distribution system. For the crewed space flight program, Goddard develops tools for use by astronauts during extra-vehicular activity , and operates the Lunar Reconnaissance Orbiter , a spacecraft designed to study

2592-533: The Spacecraft Tracking and Data Acquisition Network ( STADAN ) in the early 1960s. Consisting of parabolic dish antennas and telephone switching equipment deployed around the world, the STADAN provided space-to-ground communications for approximately 15 minutes of a 90-minute orbit period. This limited contact-period sufficed for uncrewed spacecraft, but crewed spacecraft require a much higher data collection time. A side-by-side network established right after STADAN in

2664-838: The Tropical Rainfall Measuring Mission (TRMM) and the Global Precipitation Measurement mission (GPM), missions that provide data critical to hurricane predictions. Many Goddard projects support other organizations, such as the US Geological Survey on Landsat-7 and -8, and the National Oceanic and Atmospheric Administration (NOAA) on the Geostationary Operational Environmental Satellite (GOES) system that provide weather predictions. Other Goddard missions support

2736-575: The University of Colorado at Boulder , and the University of California, Berkeley . Goddard contributed overall project management as well as two of the instruments, two magnetometers. Once a mission is launched and reaches its destination, its instruments start collecting data. The data is transmitted back to Earth where it needs to be analyzed and stored for future reference. Goddard manages large collections of scientific data resulting from past and ongoing missions. The Earth Science Division hosts

2808-660: The White Sands Complex (WSC) in southern New Mexico, the Guam Remote Ground Terminal (GRGT) at Naval Computer and Telecommunications Station Guam , and Network Control Center located at Goddard Space Flight Center in Greenbelt, Maryland . These three stations are the heart of the network, providing command & control services. Under a system upgrade that has been completed, a new terminal has been built at Blossom Point, Maryland. WSC, located near Las Cruces consists of: Additionally,

2880-469: The 1980s allowed NASA to expand the network with the addition of more satellites, with some being co-located in a particularly busy orbital slot. See Tracking and Data Relay Satellite for more details on the satellites. The user segment of TDRSS includes many of NASA's most prominent programs. Programs such as the Hubble Space Telescope and LANDSAT relay their observations to their respective mission control centers through TDRSS. Since crewed space flight

2952-545: The Earth's resources since the launch of the first mission in 1972. TIROS-1 launched in 1960 as the first success in a long series of weather satellites . The Spartan platform deployed from the space shuttle, allowing simple, low-cost 2–3 day missions. The second of NASA's Great Observatories , the Compton Gamma Ray Observatory , operated for nine years before re-entering the Earth's atmosphere in 2000. Another of Goddard's space science observatories,

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3024-634: The GRGT was operational, an auxiliary system was located at Diego Garcia . The major parts of the Space Flight Tracking and Data Network (STDN) are: the NASA Integrated Services Network (NISN), network control center (NCC), mission operations center (MOC), spacecraft data processing facility (SDPF), and the multi mission flight dynamics lab (MMFD). NISN provides the data transfer backbone for space missions. It

3096-504: The Goddard Earth Science Data and Information Services Center (GES DISC). It offers Earth science data, information, and services to research scientists, applications scientists, applications users, and students. The NASA Space Science Data Coordinated Archive (NSSDCA), created at Goddard in 1966, hosts a permanent archive of space science data, including a large collection of images from space. Section 102(d) of

3168-627: The Greenbelt site. These facilities are: GSFC is also responsible for the White Sands Complex , a set of two sites in Las Cruces, NM , but the site is owned by Johnson Space Center as part of the White Sands Test Facility . Goddard Space Flight Center has a workforce of over 3,000 civil servant employees, 60% of whom are engineers and scientists. There are approximately 7,000 supporting contractors on site every day. It

3240-736: The High Data Rate System (HDRS). IPONET uses the TCP/IP protocol common to all computers connected to the Internet, and is a standard way to ship data. The High Data Rate System transports data rates from 2  Mbit/s to 48 Mbit/s, for specialized missions requiring a high rate of data transfer. HDRS does not require the infrastructure of routers, switches and gateways to send its data forward like IPONET. The NCC provides service planning, control, assurance and accountability. Service planning takes user requests and disseminates

3312-1081: The MSFNOCC, the facility was renamed to the Network Control Center (NCC). It remained the NCC until 1997-1999 when the NIC was born. The NIC supported the beginning of the new age of growing space communications which included the International Space Station (ISS). The facility was later renovated from the floor up to become the Near Space Operations Control Center (NSOCC) in 2023. The NSOCC currently provides critical mission support for various launch efforts including SpaceX Crew & Cargo, Science missions such as JWST & PACE, and provides critical data services for Japan Aerospace Exploration Agency (JAXA) and European Space Agency (ESA). The NSOCC provides

3384-453: The Moon in preparation for future crewed exploration . A fact sheet highlighting many of Goddard's previous missions is recorded on a 40th anniversary webpage. Goddard has been involved in designing, building, and operating spacecraft since the days of Explorer 1 , the nation's first artificial satellite. The list of these missions reflects a diverse set of scientific objectives and goals. The Landsat series of spacecraft has been studying

3456-554: The Sciences and Exploration Directorate (SED) leads the center's scientific endeavors, including the development of technology related to scientific pursuits. Some of the most important technological advances developed by Goddard (and NASA in general) come from the need to innovate with new scientific instruments in order to be able to observe or measure phenomena in space that have never been measured or observed before. Instrument names tend to be known by their initials. In some cases,

3528-480: The Sun and how its behavior affects life on the Earth. The Lunar Reconnaissance Orbiter (LRO) is mapping out the composition and topography of the Moon and the Solar Dynamics Observatory (SDO) is tracking the Sun's energy and influence on the Earth. The OSIRIS-REx asteroid sample return mission returned a sample from asteroid 101955 Bennu in 2023 and under the name OSIRIS-APEX is headed to asteroid 99942 Apophis in 2029. Particularly noteworthy operations include

3600-783: The US economy and improve the quality of life. Documentation of these technologies that were spun off started in 1976 with "Spinoff 1976". Since then, NASA has produced a yearly publication of these spinoff technologies through the Innovative Partnerships Program Office. Goddard Space Flight Center has made significant contributions to the US economy and quality of life with the technologies it has spun off. Here are some examples: Weather balloon technology has helped firefighters with its short-range radios; aluminized Mylar in satellites has made sports equipment more insulated; laser optics systems have transformed

3672-516: The WSC remotely controls the GRGT on Guam . The WSC has its own exit from U.S. Route 70 that is for facility staff only. NASA decided on the location of the ground terminals using very specific criteria. Foremost was the ground station's view of the satellites; the location had to be close enough to the equator to view the skies, both east and west. Weather was another important factor – New Mexico has, on average, almost 350 days of sunshine per year, with

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3744-478: The camera industry and life detection missions on other planets help scientists find bacteria in contaminated food. Goddard's partly wooded campus is 6.5 miles (10.5 km) northeast of Washington, D.C., in Prince George's County . The center is on Greenbelt Road, which is Maryland Route 193 . Baltimore, Annapolis, and NASA Headquarters in Washington are 30–45 minutes away by highway. Greenbelt also has

3816-609: The crewed space flight program, providing computer support and radar tracking of flights through a worldwide network of ground stations called the Spacecraft Tracking and Data Acquisition Network (STDN). However, the Center focused primarily on designing uncrewed satellites and spacecraft for scientific research missions. Goddard pioneered several fields of spacecraft development, including modular spacecraft design, which reduced costs and made it possible to repair satellites in orbit. Goddard's Solar Max satellite, launched in 1980,

3888-667: The early 1960s, called the Manned Space Flight Network (MSFN), interacted with crewed spacecraft in Earth orbit. Another network, the Deep Space Network (DSN), interacted with crewed spacecraft higher than 10,000 miles from Earth, such as the Apollo missions, in addition to its primary mission of data collection from deep space probes. With the creation of the Space Shuttle in the mid-1970s,

3960-428: The engineers to develop these instruments. Typically, a mission consists of a spacecraft with an instrument suite (multiple instruments) on board. In some cases, the scientific requirements dictate the need for multiple spacecraft. For example, the Magnetospheric Multiscale Mission (MMS) studies magnetic reconnection, a 3-D process. In order to capture data about this complex 3-D process, a set of four spacecraft fly in

4032-416: The final link, sending commands to the spacecraft and performing the operations. The MMFD lab provides flight project and tracking network support. Flight project support consists of orbital and attitude determination and control. Orbital parameters are traced through the actual orbit of the mission spacecraft and compared to its predicted orbit. Attitude determination computes sets of parameters that describe

4104-500: The general public, but attendees must sign up in advance to procure a visitors pass for access to the center's main grounds. Passes can be obtained at the security office main gate on Greenbelt Road. Goddard also hosts several different internship opportunities, including NASA DEVELOP at Goddard Space Flight Center. Queen Elizabeth II of the United Kingdom and her husband Prince Philip, Duke of Edinburgh visited Goddard Space Flight Center on Tuesday, May 8, 2007. The tour of Goddard

4176-476: The globe, these sites were vulnerable to the political whims of the host country. In order to maintain a high-reliability rate coupled with higher data transfer speeds, NASA began a study to augment the system with space-based communication nodes. The space segment of the new system would rely upon satellites in geostationary orbit. These satellites, by virtue of their position, could transmit and receive data to lower orbiting satellites and still stay within sight of

4248-432: The ground station. The operational TDRSS constellation would use two satellites, designated TDE and TDW (for east and west ), and one on-orbit spare. After the study was completed, NASA realized that a minor system modification was needed to achieve 100% global coverage. A small area would not be within line-of-sight of any satellites – a so-called Zone of Exclusion (ZOE). With the ZOE, neither TDRS satellite could contact

4320-400: The information to the appropriate SN elements. Service control and assurance supports functions of real-time usage, such as receipt, validation, display and dissemination of TDRSS performance data. Service accountability provides accounting reports on the use of the NCC and network resources. The NCC was originally located at Goddard Space-flight Center, in Greenbelt, Maryland until 2000, when it

4392-470: The instruments. The individual instruments are then integrated into an instrument suite which is then integrated with the spacecraft. In the case of MMS, for example, Southwest Research Institute (SwRI) was responsible for developing the scientific instruments and Goddard provides overall project management, mission systems engineering, the spacecraft, and mission operations. On the Lunar Reconnaissance Orbiter (LRO), six instruments have been developed by

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4464-460: The mission's name gives an indication of the type of instrument involved. For example, the James Webb Space Telescope is, as its name indicates, a telescope, but it includes a suite of four distinct scientific instruments: Mid-Infrared Instrument (MIRI); Near-Infrared Camera (NIRCam); Near-Infrared Spectrograph (NIRSpec); Fine Guidance Sensor and Near Infrared Imager and Slitless Spectrograph (FGS-NIRISS). Scientists at Goddard work closely with

4536-465: The nature of the Sun's interaction with its surroundings. Based on existing knowledge accumulated through previous missions, new science questions are articulated. Missions are developed in the same way an experiment would be developed using the scientific method. In this context, Goddard does not work as an independent entity but rather as one of the 10 NASA centers working together to find answers to these scientific questions. Each mission starts with

4608-605: The space shuttle and international space station, most of their bandwidth is devoted to the Pentagon, which covers the lion's share of TDRSS operations costs and is driving many of the system's requirements, some of them classified." In October 2008, the NRO declassified the existence of mission ground stations in the US called Aerospace Data Facility (ADF)- Colorado, ADF-East and ADF-Southwest near Denver, Colorado , Washington, D.C. , and Las Cruces, New Mexico , respectively. ADF-Colorado and ADF-East are known to be located at Buckley AFB , CO and Fort Belvoir, Virginia ; ADF-Southwest

4680-680: The summers, programs such as the Summer Institute in Engineering and Computer Applications (SIECA) and Excellence through Challenging Exploration and Leadership (EXCEL) provide internship opportunities to students from the US and territories such as Puerto Rico to learn and partake in challenging scientific and engineering work. The Goddard Space Flight Center maintains ties with local area communities through external volunteer and educational programs. Employees are encouraged to take part in mentoring programs and take on speaking roles at area schools. On Center, Goddard hosts regular colloquiums in engineering, leadership and science. These events are open to

4752-437: The technologies used on TDRSS and other commercial communications satellites, including frequency division multiple-access ( FDMA ), three-axis spacecraft stabilization and high-performance communications technologies. As of July 2009, TDRS project manager is Jeff J. Gramling, NASA Goddard Space Flight Center. Robert P. Buchanan, Deputy Project Manager, retired after 41 years at NASA with TDRS as one of final missions. Boeing

4824-419: The year. As an example, in September 2008 the Center opened its gates for Goddard LaunchFest. The event, free to the public, included; robot competitions, tours of Goddard facilities hosted by NASA employees, and live entertainment on the Goddard grounds. GSFC also has a large ballroom for guest events such as lectures, presentations and dinner parties. GSFC operates three facilities that are not located at

4896-438: Was in the midst of the Gemini mission era there was a need for a new kind of operations hub and the Manned Space Flight Network Control Center (MSFNOCC) was created in building 13. The name has changed over the years and as such, the capability has grown; the facility has been the GSFC hub for human space flight and launch vehicle missions for years and has the distinct honor of having supported every single Shuttle mission. After

4968-470: Was never numbered due to its loss in the Space Shuttle Challenger disaster ). Ku band Too Many Requests If you report this error to the Wikimedia System Administrators, please include the details below. Request from 172.68.168.237 via cp1104 cp1104, Varnish XID 205862069 Upstream caches: cp1104 int Error: 429, Too Many Requests at Thu, 28 Nov 2024 07:46:31 GMT Goddard Space Flight Center The Goddard Space Flight Center ( GSFC )

5040-444: Was one of the primary reasons for building TDRSS, the space shuttle and International Space Station voice communications are routed through the system. The TDRSS system has been used to provide data relay services to many orbiting observatories, and also to Antarctic facilities such as McMurdo Station by way of the TDRSS South Pole Relay. The US-built sections of the International Space Station (ISS) use TDRSS for data relay. TDRSS

5112-454: Was relocated to the WSC. The MOC is the focal point of spacecraft operations. It will schedule requests for support, monitor spacecraft performance and upload control information to the spacecraft (through TDRSS). MOC consists of principal investigators, mission planners and flight operators. Principal investigators initiate requests for SN support. Mission planners provide documentation for the spacecraft and its mission. And flight operators are

5184-617: Was repaired by astronauts on the Space Shuttle Challenger in 1984. The Hubble Space Telescope, launched in 1990, remains in service and continues to grow in capability thanks to its modular design and multiple servicing missions by the Space Shuttle. Today, the center remains involved in each of NASA's key programs. Goddard has developed more instruments for planetary exploration than any other organization, among them scientific instruments sent to every planet in

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