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Sentinel (space Telescope)
The Sentinel Space Telescope was a space observatory to be developed by Ball Aerospace & Technologies for the B612 Foundation. The B612 Foundation is dedicated to protecting the Earth from dangerous impact event, asteroid strikes and Sentinel was to be the Foundation's first spacecraft tangibly to address that mission. The space telescope was intended to locate and catalog 90% of the asteroids greater than in diameter that exist in Near-Earth object, near-Earth orbits. The telescope would have orbited the Sun in a Venus-like orbit (i.e. between Earth and the Sun). This orbit would allow it clearly to view the night half of the sky every 20 days, and pick out objects that are currently often difficult, if not impossible, to see in advance from Earth." Sentinel would have had an operational mission life of six and a half to ten years. After NASA terminated their funding agreement with the B612 Foundation in October 2015 and the private fundraising goals could not be met, the F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sentinel Space Telescope Illustration
Sentinel may refer to: Places Mountains * Mount Sentinel, a mountain next to the University of Montana in Missoula, Montana * Sentinel Buttress, a volcanic crag on James Ross Island, Antarctica * Sentinel Dome, a naturally occurring granite dome in Yosemite National Park, California * Sentinel Mountain (Montana), in Glacier National Park * Sentinel Peak (Alberta) * Sentinel Peak (Antarctica) * Sentinel Peak (Arizona), a peak in the Tucson Mountains * Sentinel Peak (British Columbia) * Sentinel Range, a mountain range in Antarctica * The Sentinel, Hout Bay * The Sentinel (Zion), a sandstone summit in Zion National Park, Utah Elsewhere * Sentinel, Arizona * Sentinel, California * Sentinel, Missouri * Sentinel, Oklahoma * Sentinel Island (other) Arts, entertainment, and media Artworks * ''Sentinel'' (sculpture), a 2000 sculpture by Tim Tolkien * ''Sentinels'' (Hudson), a 2005 public artwork by American artist Jon Barlow Hudson Comics * ''Sentinel'' (comic b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ed Lu
Edward Tsang "Ed" Lu (; born July 1, 1963) is an American physicist and former NASA astronaut. He flew on two Space Shuttle flights, and made an extended stay aboard the International Space Station. In 2007, Lu retired from NASA to become the program manager of Google's Advanced Projects Team. In 2002, while still at NASA, Lu co-founded the B612 Foundation, dedicated to protecting the Earth from asteroid strikes, later serving as its chairman. As of 2020, he is its Executive Director. Education Raised in Webster, New York, to a Chinese-American family. Lu attended R. L. Thomas High School, where he was a member of the wrestling team and graduated in 1980. Later, Lu earned a degree in electrical engineering from Cornell University where he lettered in wrestling. He then received a doctoral degree in applied physics from Stanford University in 1989. Lu is a member of the Psi chapter of Pi Kappa Phi fraternity at Cornell. Lu became a specialist in solar physics and did postdocto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Private Spaceflight Companies
This article is a list of non-governmental, or privately owned, entities focused on developing and/or offering equipment and services geared towards spaceflight, both robotic and human. The list includes both inactive and active entities. Commercial astronauts * Association of Spaceflight Professionals — Astronaut training, applied research and development, payload testing and integration, mission planning and operations support ( Christopher Altman, Soyeon Yi)Seedhouse, Erik. Astronauts for Hire: The Emergence of the World's First Commercial Astronaut Corps'' Springer-Verlag: New York (2012). Manufacturers of space vehicles Cargo transport vehicles Crew transport vehicles Orbital :''* - Format: Crewed (Uncrewed), includes failures'' Suborbital :''* - Format: Crewed (Uncrewed), includes failures'' Launch vehicle manufacturers Landers, rovers and orbiters Research craft and tech demonstrators Propulsion manufacturers Satellite launchers Space- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunguska Event
The Tunguska event (occasionally also called the Tunguska incident) was an approximately 12-megaton explosion that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate (now Krasnoyarsk Krai), Russia, on the morning of June 30, 1908. The explosion over the sparsely populated Eastern Siberian Taiga flattened an estimated 80 million trees over an area of of forest, and eyewitness reports suggest that at least three people may have died in the event. The explosion is generally attributed to a meteor air burst: the atmospheric explosion of a stony asteroid about in size. The supposed asteroid approached from the east-southeast, and likely with a relatively high speed of about (~ Ma 80). It is classified as an impact event, even though no impact crater has been found; the object is thought to have disintegrated at an altitude of rather than having hit the surface of the Earth. The Tunguska event is the largest impact event on Earth in recorded history, thou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Existential Risk
A global catastrophic risk or a doomsday scenario is a hypothetical future event that could damage human well-being on a global scale, even endangering or destroying modern civilization. An event that could cause human extinction or permanently and drastically curtail humanity's potential is known as an "existential risk." Over the last two decades, a number of academic and non-profit organizations have been established to research global catastrophic and existential risks, formulate potential mitigation measures and either advocate for or implement these measures. Definition and classification Defining global catastrophic risks The term global catastrophic risk "lacks a sharp definition", and generally refers (loosely) to a risk that could inflict "serious damage to human well-being on a global scale". Humanity has suffered large catastrophes before. Some of these have caused serious damage but were only local in scope—e.g. the Black Death may have resulted in the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroids
An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. Of the roughly one million known asteroids the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 AU from the Sun, in the main asteroid belt. Asteroids are generally classified to be of three types: C-type, M-type, and S-type. These were named after and are generally identified with carbonaceous, metallic, and silicaceous compositions, respectively. The size of asteroids varies greatly; the largest, Ceres, is almost across and qualifies as a dwarf planet. The total mass of all the asteroids combined is only 3% that of Earth's Moon. The majority of main belt asteroids follow slightly elliptical, stable orbits, revolving in the same direction as the Earth and taking from three to six years to comple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Near-Earth Asteroids
A near-Earth object (NEO) is any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (perihelion) is less than 1.3 astronomical units (AU). If a NEO's orbit crosses the Earth's orbit, and the object is larger than across, it is considered a potentially hazardous object (PHO). Most known PHOs and NEOs are asteroids, but a small fraction are comets. There are over 30,503 known near-Earth asteroids (NEAs) and over a hundred known short-period near-Earth comets (NECs). A number of solar-orbiting meteoroids were large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the Earth. Asteroids as small as in diameter can cause significant damage to the local environment and human populations. Larger asteroids penetrate the atmosphere to the surfa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toutatis
Toutatis or Teutates is a Celtic god who was worshipped primarily in ancient Gaul and Britain. His name means "god of the tribe", and he has been widely interpreted as a tribal protector.Paul-Marie Duval (1993). ''Les dieux de la Gaule.'' Éditions Payot, Paris. According to Roman writer Lucan, the Gauls offered human sacrifices to him. Name and nature ''Toutatis'' (pronounced in Gaulish)Pierre-Yves Lambert (2003). ''La langue gauloise.'' Éditions Errance, Paris. and its variants ''Toutates'', ''Teutates'', ''Tūtatus'' and ''Toutorīx'', comes from the Gaulish Celtic root ''toutā'', meaning 'tribe' or 'people' (compare Old Irish ''tuath'' and Welsh ''tud''). A literal meaning would thus be "god of the tribe". A similar phrase is found in Irish mythology, which mentions the oath formula ''tongu do dia tongas mo thuath'', roughly "I swear by the god by whom my tribe swears". Bernhard Maier proposes that his name derives from an older *''teuto-tatis'', with the meaning 'fathe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Preliminary Design Review
In the United States military integrated acquisition lifecycle the Technical section has multiple acquisition "Technical Reviews". Technical reviews and audits assist the acquisition and the number and types are tailored to the acquisition. Overall guidance flows from the Defense Acquisition Guidebook chapter 4, with local details further defined by the review organizations. Typical topics examined include adequacy of program/contract metrics, proper staffing, risks, budget, and schedule. In NASA's engineering design life cycle, design reviews are held for technical and programmatic accountability and to authorize the release of funding to a project. A design review provides an in-depth assessment by an independent team of discipline experts and managers that the design (or concept) is realistic and attainable from a programmatic and technical sense. Design review is also required of medical device developers as part of a system of design controls described in the US Food and D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SpaceX
Space Exploration Technologies Corp. (SpaceX) is an American spacecraft manufacturer, launcher, and a satellite communications corporation headquartered in Hawthorne, California. It was founded in 2002 by Elon Musk with the stated goal of reducing space transportation costs to enable the colonization of Mars. The company manufactures the Falcon 9, Falcon Heavy, and Starship launch vehicles, several rocket engines, Cargo Dragon and Crew Dragon spacecraft, and Starlink communications satellites. SpaceX is developing a satellite internet constellation named Starlink to provide commercial internet service. In January 2020, the Starlink constellation became the largest satellite constellation ever launched, and as of December 2022 comprises over 3,300 small satellites in orbit. The company is also developing Starship, a privately funded, fully reusable, super heavy-lift launch system for interplanetary and orbital spaceflight. It is intended to become SpaceX's primary orbi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clark Chapman
Clark R. Chapman is a senior scientist and astronomer at the Southwest Research Institute's Boulder, Colorado, Department of Space Studies His research generally focuses on astronomy including meteorology and comets. He earned an undergraduate degree in astronomy from Harvard, Master's Degree in Meteorology from M.I.T., and PhD in Planetary Science from M.I.T. (1972). He is best known for his work on potentially hazardous asteroids and was among the first scientists to bring attention to asteroids and comets that are potentially hazardous to Earth. co-founder and on the Board of Directors of B612 Dr. Chapman has served extensively on the IAU's commission for the study of comets and minor planets, serving as member, vice president and president. He currently is a member of the division focused on planetary systems and astrobiology. Chapman also worked on the science teams of the MESSENGER mission to Mercury, Galileo and Near-Earth Asteroid Rendezvous mission. In addition t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rusty Schweickart
Russell Louis "Rusty" Schweickart (also Schweikart; born October 25, 1935) is an American aeronautical engineer, and a former NASA astronaut, research scientist, U.S. Air Force fighter pilot, as well as a former business executive and government executive. Schweickart was selected in 1963 for NASA's third astronaut group. He was the Lunar Module Pilot on the 1969 Apollo 9 mission, the first crewed flight test of the lunar module, on which he performed the first in-space test of the portable life support system used by the Apollo astronauts who walked on the Moon. As backup Commander of the first crewed Skylab mission in 1973, he was responsible for developing the hardware and procedures used by the first crew to perform critical in-flight repairs of the Skylab station. After Skylab, he served for a time as Director of User Affairs in NASA's Office of Applications. Schweickart left NASA in 1977 to serve for two years as California Governor Jerry Brown's assistant for scie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
