... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

... For a timeline of the exploration of the magnetic environment of the Earth, Sun and Planets, see here . ... Galileo Galilei (1564-1642) builds the first astronomical telescope and observes for the first time craters on the Moon, satellites around Jupiter, and the way Venus goes through phases like the Moon (crescent, etc.) ... 17 December--First successful flight by the Wright brothers at Kitty Hawk, North Carolina. ... 16 March--Goddard launches his first liquid-fuel rocket. ...

lsst.tcc љ 1.2.2-3-g89ecb63 . ... Files . ... include . ... earth.h . ... 5 љ #include <boost/tr1/array.hpp> // so array works with old and new compilers . ... 16 љ std::tr1::array<double, 3> startTAI ; // TAI date of start of UTC_day and the next two UTC days (MJD, sec) . 17 љ std::tr1::array<double, 2> ut1_taiIntercept ; // UT1-TAI intercept at TAI[i] (sec) . 18 љ std::tr1::array<double, 2> poleInterceptX ; // pole x offset intercept at TAI[i] (deg) . ... std::tr1::array< double, 3 > . ...

... NASA , NSF Explanation: Is our Earth unique? In continuing efforts to answer this question, astronomers have now discovered an Earth-like planet orbiting a distant normal star. ... Slight, fast, but regular wobbles of nearby small M - dwarf star Gliese 876 showed evidence for a planet with a likely mass slightly higher than a minimum six times the mass of Earth. ... Publications with keywords: planets - Earth - Gliese 876 . Publications with words: planets - Earth - Gliese 876 . ...

... Listed below are questions submitted by users of "The Great Magnet, the Earth" and the answers given to them. ... In "The Exploration of the Earth's magnetosphere" on the magnetic environment of the Earth in space (a few Q duplicated here) . ... 11) Magnetic Shielding . ... 51) Can electricity be generated from the Earth's magnetic field? ... 9) Measuring Earth's magnetic field . ... 6) Reversals of the Earth's field (4 queries) . ... 42) Could generated electricity affect Earth's magnetic field? ...

National Aeronautics and Space Administration . ... Bruce McCandless II (Captain, USN, Ret.) NASA Astronaut (former) . ... He was a member of the astronaut support crew for the Apollo 14 mission and was backup pilot for the first manned Skylab mission (SL-1/SL-2). ... A veteran of two space flights, McCandless has logged over 312 hours in space, including 4 hours of MMU flight time. ... With the completion of this flight McCandless logged 191 hours in space (including 4 hours of MMU flight time). ...

... Space Flight . ... Earth Satellites . ... The first satellite launched into orbit was Sputnik€а 1 (meaning ?Traveller?), launched in 1957 by the Soviet Union. ... Space Shuttle creeping to the pad to launch the Misty satellite into orbit? ... The Misty is not the only mystery in orbit, another potential covert satellite is known as Prowler. ... However there does seem to be enough substantiated sightings and evidence to suggest there are or perhaps were real mystery satellites orbiting the Earth. ...

... 2005 June 14 . Gliese 876 System Includes Large Terrestrial Planet . ... Slight, fast, but regular wobbles of nearby small M - dwarf star Gliese 876 showed evidence for a planet with a likely mass slightly higher than a minimum six times the mass of Earth. The planet's small mass indicates that it is likely terrestrial in nature, similar in composition to the inner planets of our Solar System . ... The newly discovered terrestrial-like planet is depicted in the insert. ... About APOD | ...

... WolfDoom for help on ambient effects and some sounds. ... You must have my permission to put on CD * Where to get this WAD * FTP sites: ftp.cdrom.com Other: Me -Build history- v0.1 *ALPHA* 12-15-1997 Released to a few friends online Basic wad functions ( music , gfx, snd) v0.2 * beta 1* DATE UKNOWN (lost track) weapons added Added dehacked patch for special effects added 2 enemies Messed up on DEH, rewrote it over. :( v0.25 * beta 2* DATE UKNOWN Ambience added ! more graphics ...

The process of correcting for the effect of the variation in the sensitivity of the WFPC2 with field position is known as flat-fielding, or flattening. ... Instead, several assets are available to estimate the flat field and monitor any changes -- these include pre-launch SLTV optical stimulus flats, Earth flats, calibration channel flats (VISFLATS), and internal flats (INTFLATS). ... There are also two types of on-board flats available in WFPC2, which can be used to monitor changes in the flat field. ...

... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...

Sixty-five million years ago, about 70 percent of all species then living on Earth disappeared within a very short period. ... Paleontologists speculated and theorized for many years about what could have caused this mass extinction, known as the K-T event (Cretaceous-Tertiary Mass Extinction event). ... The Alvarez team suggested that the enhancement was the product of a huge asteroid impact. ... Sulfuric acid aerosols may have cooled Earth for years. ... Appendix C ...

... An artificial comet holds secrets to Earths life . ... Supernova showered Earth with radioactive debris . ... Solar eclipse travelogue: Sulawesi delivers a spectacular eclipse . ... Tune into the Asteroid Day press conference . ... Asteroid DayУ?т??т??s Don Yeomans: Will asteroid 2013 TX68 strike Earth? ... As Earth was molten early during its formation, dense metals should have sunk toward the core, yet iron is found closer to the surface. Did asteroids and comets deliver some of these materials? ...

Near-Earth Asteroids and the Arecibo Observatory Radar The Arecibo Observatory radar is the world's most powerful instrument for post-discovery characterization and orbital refinement of near-Earth asteroids. Arecibo radar observations are critical for identifying asteroids that might be on collision course with Earth and, if necessary, preventing a collision. ... A model of the primary component of asteroid 1999 KW4, derived from radar data. ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Development of Organizational Structure . Company's History . ... History . Brief History of Rocket and Space Technology . ... Project History . ISS Russian Segment . Steps of ISS Assembly . ... ISS 45/46 . ... Rocket Space Complexes . ... The experiment further develops a sequence of visual observations of the Earth surface started earlier at the Mir station. ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

... Satellite data ] . ... The SCANOR system provides receiving and processing of the Earth-surface pictures made in visible and infra-red bands and transferred by satellites of the NOAA polar orbiter series (in the HRPT mode). ... The SCANOR system includes the desktop receiving device connected to an IBM AT 386 type computer, and the parabolic antenna with the guiding mechanism. The SCANOR system possesses the state-of-art software providing registration and processing of the received data. ...

One of the major unknowns in the history of Earth is concerned with the effects on the Earth of the Late Heavy Bombardment, documented on the moon during ~3.95-3.85 billion years. To date pre-3.6 billion years-old terrains disclose little evidence for asteroid impacts, likely due to the masking of their textural, mineralogical and geochemical signatures by high grade metamorphism. ... To date at least 15 such events are recorded in South Africa and Western Australia. ...

KLENOT Project - Contribution to Follow-up Astrometry of PHAs and VIs . ... The KLENOT project is aimed especially to do so. ... Very Long Baseline Interferometry (VLBI), KLENOT project, Near Earth Objects (NEOs), professional NEO follow-up programs, follow-up astrometry of PHAs and VIs, Solar System science, asteroid and comet hazard, NEO discovery, precise orbit computation, judging of future close encounters with the Earth, possible impact solutions. ...

... Classes . ... Class List . ... casa . casa::SolarPos . ... Solar position class and calculations. ... SolarPos (const SolarPos &other) . ... operator() ( Double epoch) . ... Barycentric position of Earth. const MVPosition & casa::SolarPos::baryEarthDerivative . ... Barycentric position of Sun. const MVPosition & casa::SolarPos::barySunDerivative . ... Double casa::SolarPos::checkEpoch [private] . ... Double casa::SolarPos::checkSunEpoch [private] . ... Double casa::SolarPos::deval [3] [private] . ...