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Wubbo Ockels
Wubbo Johannes Ockels (28 March 1946 – 18 May 2014) was a Dutch physicist and astronaut with the European Space Agency who, in 1985, became the first Dutch citizen in space when he flew on STS-61-A as a payload specialist. He later became professor of aerospace engineering at Delft University of Technology. Education and early life Ockels was born in Almelo, Netherlands, but considered Groningen to be his hometown. He obtained his MSc degree in physics and mathematics in 1973 and subsequently a PhD degree in the same subjects in 1978 from the University of Groningen. His thesis was based on experimental work at the Nuclear-physics Accelerator Institute (KVI) in Groningen. From 1973 to 1978, Ockels performed experimental investigations at the Nuclear Physics Accelerator Institute in Groningen. His work concerned the gamma-ray decay of nuclear systems directly after formation and the development of a data-handling system involving design of electronics and programming of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ESA Astronaut
The European Astronaut Corps is a unit of the European Space Agency (ESA) that selects, trains, and provides astronauts as crew members on U.S. and Russian space missions. The corps has 13 active members, able to serve on the International Space Station (ISS). The European Astronaut Corps is based at the European Astronaut Centre in Cologne, Germany. They can be assigned to various projects both in Europe (at ESTEC, for instance) or elsewhere in the world, at NASA Johnson Space Center or Star City, Russia, Star City. History Current members As of 2024 there are eleven active members of the European Astronaut Corps. Five were selected in 2009, one was selected in 2015, and the remaining five selected in 2022. All of the current members of the corps, other than the 2022 ESA Group, have flown to space and have visited the ISS. French astronaut Thomas Pesquet is the member of the corps who has accumulated the most time in space with 396 days, 11 hours and 34 minutes. He is the reco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Groningen
Groningen ( , ; ; or ) is the capital city and main municipality of Groningen (province), Groningen province in the Netherlands. Dubbed the "capital of the north", Groningen is the largest place as well as the economic and cultural centre of the northern part of the country; as of January 2025, it had 244,807 inhabitants, making it the sixth largest city/municipality in the Netherlands and the second largest outside the Randstad. The Groningen metropolitan area has a population of over 360,000. Groningen was established more than 980 years ago but never gained City rights in the Low Countries, city rights. Due to its relatively isolated location from the then successive Dutch centres of power (Utrecht, The Hague, Brussels), Groningen was historically reliant on itself and nearby regions. As a Hanseatic League, Hanseatic city, it was part of the North German trade network, but later it mainly became a regional market centre. At the height of its power in the 15th century, Gron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Houston, Texas
Houston ( ) is the List of cities in Texas by population, most populous city in the U.S. state of Texas and in the Southern United States. Located in Southeast Texas near Galveston Bay and the Gulf of Mexico, it is the county seat, seat of Harris County, Texas, Harris County, as well as the principal city of the Greater Houston metropolitan area, the fifth-most populous metropolitan statistical area in the United States and the List of Texas metropolitan areas, second-most populous in Texas after Dallas–Fort Worth metroplex, Dallas–Fort Worth. With a population of 2,314,157 in 2023, Houston is the List of United States cities by population, fourth-most populous city in the United States after New York City, Los Angeles, and Chicago, and the List of North American cities by population, sixth-most populous city in North America. Houston is the southeast anchor of the greater megaregion known as the Texas Triangle. Comprising a land area of , Houston is the List of United S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johnson Space Center
The Lyndon B. Johnson Space Center (JSC) is NASA's center for human spaceflight in Houston, Texas (originally named the Manned Spacecraft Center), where human spaceflight training, research, and flight controller, flight control are conducted. It was renamed in honor of the late U.S. president and Texas native, Lyndon B. Johnson, by an act of the United States Senate on February 19, 1973. JSC consists of a complex of 100 buildings constructed on in Clear Lake (region), Clear Lake. The center is home to NASA Astronaut Corps, NASA's astronaut corps, and is responsible for training astronauts from both the U.S. and its international partners. It also houses the Christopher C. Kraft Jr. Mission Control Center, which has provided the flight controller, flight control function for every NASA human spaceflight since Gemini 4 (including Apollo program, Apollo, Skylab, Apollo–Soyuz, and Space Shuttle program, Space Shuttle). It is popularly known by its radio call signs "Mission Contr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claude Nicollier
Claude Nicollier (born 2 September 1944) is the first astronaut from Switzerland. He has flown on four Space Shuttle missions. His first spaceflight ( STS-46) was in 1992, and his final spaceflight ( STS-103) was in 1999. He took part in two servicing missions to the Hubble Space Telescope (called STS-61 and STS-103). During his final spaceflight he participated in a spacewalk, becoming the first European Space Agency astronaut to do so during a Space Shuttle mission (previous ESA astronauts conducted spacewalks aboard '' Mir'', see List of spacewalks and moonwalks 1965–1999). In 2000 he was assigned to the Astronaut Office Extravehicular Activity Branch, while maintaining a position as Lead ESA Astronaut in Houston. Nicollier retired from ESA in April 2007. He was appointed full professor of Spatial Technology at the École Polytechnique Fédérale de Lausanne on 28 March 2007. He was an expert board member of Swiss Space Systems, until the company's dissolution. Early li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States's civil list of government space agencies, space program, aeronautics research and outer space, space research. National Aeronautics and Space Act, Established in 1958, it succeeded the National Advisory Committee for Aeronautics (NACA) to give the American space development effort a distinct civilian orientation, emphasizing peaceful applications in space science. It has since led most of America's space exploration programs, including Project Mercury, Project Gemini, the 1968–1972 Apollo program missions, the Skylab space station, and the Space Shuttle. Currently, NASA supports the International Space Station (ISS) along with the Commercial Crew Program and oversees the development of the Orion (spacecraft), Orion spacecraft and the Sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
STS-9
STS-9 (also referred to Spacelab 1) was the ninth NASA Space Shuttle mission and the sixth mission of the Space Shuttle ''Columbia''. Launched on November 28, 1983, the ten-day mission carried the first Spacelab laboratory module into orbit. STS-9 was also the last time the original STS numbering system was used until STS-26, which was designated in the aftermath of the 1986 ''Challenger'' disaster of STS-51-L. Under the new system, STS-9 would have been designated as STS-41-A. STS-9's originally planned successor, STS-10, was canceled due to payload issues; it was instead followed by STS-41-B. After this mission, ''Columbia'' was taken out of service for renovations and did not fly again until STS-61-C in early January 1986. STS-9 sent the first non-U.S. citizen into space on the Shuttle, Ulf Merbold, becoming the first ESA and first West German citizen to go into space. Crew Support crew * John E. Blaha (entry CAPCOM) * Franklin R. Chang-Diaz * Mary L. Cleave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
STS-61-A Crew
STS-61-A (also known as Spacelab D-1) was the 22nd mission of NASA's Space Shuttle program. It was a scientific Spacelab mission, funded and directed by West Germany – hence the non-NASA designation of D-1 (for Deutschland-1). STS-61-A was the ninth and last successful flight of Space Shuttle ''Challenger'' before the disaster. STS-61-A holds the current record for the largest crew—eight people—aboard any single spacecraft for the entire period from launch to landing. The mission carried the NASA/European Space Agency (ESA) Spacelab module into orbit with 76 scientific experiments on board, and was declared a success. Payload operations were controlled from the German Space Operations Center in Oberpfaffenhofen, West Germany, instead of from the regular NASA control center. This was the first spaceflight to include multiple crewmembers from any single country other than the United States or Soviet Union. The crew also included the first Dutch citizen astronaut, payload s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Real-time Computing
Real-time computing (RTC) is the computer science term for Computer hardware, hardware and software systems subject to a "real-time constraint", for example from Event (synchronization primitive), event to Event (computing), system response. Real-time programs must guarantee response within specified time constraints, often referred to as "deadlines".Mordechai Ben-Ari, Ben-Ari, Mordechai; "Principles of Concurrent and Distributed Programming", ch. 16, Prentice Hall, 1990, , p. 164 The term "real-time" is also used in Computer simulation, simulation to mean that the simulation's clock runs at the same speed as a real clock. Real-time responses are often understood to be in the order of milliseconds, and sometimes microseconds. A system not specified as operating in real time cannot usually ''guarantee'' a response within any timeframe, although ''typical'' or ''expected'' response times may be given. Real-time processing ''fails'' if not completed within a specified deadline rela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radioactive Decay
Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered ''radioactive''. Three of the most common types of decay are Alpha decay, alpha, Beta decay, beta, and Gamma ray, gamma decay. The weak force is the Fundamental interactions, mechanism that is responsible for beta decay, while the other two are governed by the electromagnetic force, electromagnetic and nuclear forces. Radioactive decay is a randomness, random process at the level of single atoms. According to quantum mechanics, quantum theory, it is impossible to predict when a particular atom will decay, regardless of how long the atom has existed. However, for a significant number of identical atoms, the overall decay rate can be expressed as a decay constant or as a half-life. The half-lives of radioactive atoms have a huge range: f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
