... 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 . ...

... Credit Copyright: Fefo Bouvier Explanation: In this engaging scene from planet Earth , the Moon shines through cloudy skies following sunset on the evening of September 8. ... As the the second image was made with a telephoto setting, the digital merger captures both Earth and sky, exaggerating the young Moon's slender crescent shape in relation to the two nearby bright stars. ... Closest to the Moon is Earth's evening star, planet Venus , emerging from a lunar occultation . ... September . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Exoplanets . ... Alien Life . ... Space Flight . ... Monthly Sky Notes . ... By admin September 22, 2010 Posted in: Exoplanets . ... COROT-7b is bigger than Earth, weighing nearly five times as much as our planet and more than half again as wide. ... COROT-7b was discovered by researchers using the COROT satellite (hence the name), a superb French mission to examine stellar structures and locate exoplanets. ... Exoplanets Glossary | Astronotes . ...

... 2013 September 10 . Extrasolar Super-Earth Gliese 1214b Might Hold Water . ... Explanation: Might this distant planet hold water? ... In the above artist's illustration , the super-Earth Gliese 1214b is imagined passing in front of its parent star, creating a mini-eclipse that alerted humanity to its presence. Gliese 1214b, also designated GJ 1214b , has been designated a super-Earth because it is larger than the Earth but smaller a planet like Neptune . ... About APOD | ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Slacker Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Life Under the Moon . ... Seeing Jupiter's Moons . ... Time Zones and the Spherical Earth . A Companion to the Earth? ... December 19, 1999) . ... Big Moon, Little Moon . ... How Big is the Moon? ... 14, 2000) . ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! Talk about Bad Astronomy on the BA Bulletin Board! ...

... Supernova showered Earth with radioactive debris . ... The Real Reality Show: Would aliens be anything like us? ... Do other planets have meteor showers like Earth has? ... If so, can we learn anything about the planet's atmosphere by looking at the light as meteors burn? ... RELATED TOPICS: METEOR SHOWER . All planets in our solar system that have atmospheres also have meteor showers. ... Get instant access to subscriber content on Astronomy.com! ...

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The Sun Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic Evolution ... So far, one planet has been studied by this method. ...

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... Kepler is a mission designed to detect and characterize Earth-sized planets around solar-like stars. The sizes of the planets are determined from the decrease in light from a star that occurs during planetary transits, and the orbital period is determined from the repeatability of the transits. ... These goals are accomplished by continuously and simultaneously monitoring a single field of 140,000 stars for evidence of brightness changes caused by transits of Earth-sized or larger planets. ...

... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

Jupiter is the largest of the nine planets, more than 10 times the diameter of Earth and more than 300 times its mass. ... The mean density of Earth is 5.245 times that of water. The pull of gravity on Jupiter at the top of the clouds at the equator is 2.4 times as great as gravity's pull at the surface of Earth at the equator. ... It is tipped about 11њ to Jupiter's axis of rotation, similar to Earth's, but it is also offset from the center of Jupiter by about 10,000 kilometers (6,200 miles). ...

... The 50 so-called exo-planets were discovered using a telescope that is found in South America. ... By looking at a star s wobble, astronomers can work out how many exo-planets are in orbit around it and how heavy they are. After studying all of the planets discovered with this telescope so far, astronomers have found that nearly half of stars that are similar to the Sun have at least one planet that is lighter than Saturn. ... But there are many, many more waiting to be found! ...

... Earth is the tiny spot between Jupiter and the Sun). ... Distance Radius Mass Name Orbits (000 km) (km) (kg) --------- ------- -------- ------- ------- Sun 697000 1.99e30 Jupiter Sun 778000 71492 1.90e27 Saturn Sun 1429000 60268 5.69e26 Uranus Sun 2870990 25559 8.69e25 * Neptune Sun 4504300 24764 1.02e26 * Earth Sun 149600 6378 5.98e24 Venus Sun 108200 6052 4.87e24 Mars Sun 227940 3398 6.42e23 Ganymede Jupiter 1070 2631 1.48e23 + Titan ... Extrema .. ...

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home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... People always have felt the lure of the Moon, as shown by the lunar rites practiced 5,000 years ago in northeast Scotland and the contemporary myth that people go wild during full Moons. ... One day, Earth smacked into one of those other agglomerating worlds, a wandering object the size of Mars. ... For additional information, visit our World Wide Web site at http://www.physics.sfsu.edu/asp/mercury/observer.html. ...

... The ancient chronical said about the colour rings around the Sun and the Moon, about three suns in the sky, light columns, bright lightning, different "comets" rushing to the Earth, moving among the stars or round the Earth with the sky. All these occurrences may be divided into three categories: one that occur in the near or far space, processes going on in the Earth atmosphere under the influence of cosmic factors and at last the occurrences connected with the Earth atmosphere. ... Rainbow . ...

... Visibility of Small Solar-System Bodies . Asteroids) in 2009 : . ... Distance (AU) . ... Jan. 12, 2009 . ... 8.8 m . ... is at opposition on July 4, 2009 . ... Apparent . ... from Sun (AU) . ... is at opposition on September 21, 2009 . ... middle distance between Earth and Sun, equal 149.6 millions km. ... Mean Distance: . ... a configuration of the Sun, Earth and a planet in which the apparent geocentric longitude of the planet differs by 180 from the apparent geocentric longitude of the Sun. ...

... The main topics of the Conference were: 1. ... Asteroid-comet hazard (origin and dynamic evolution of objects approaching the Earth, observations, physical properties, cataloguing, data bases, estimation of collision probability with the Earth and other bodies). ... 5) In this connection the problem of concluding the international political agreement within the frames of UN about common active counteractions to the bodies on the orbits leading to collisions with the Earth is urgent. ...

... Peter J.K. "Jeff" Wisoff (Ph.D) . NASA Astronaut (former) . ... A veteran of four space flights, STS-57 in 1993, STS-68 in 1994, STS-81 in 1997 and STS-92 in 2000, Dr. Wisoff has logged a total of 42 days, 56 hours, 1 minute and 48 seconds in space, including , 19 hours and 53 minutes of EVA time in three space walks. ... Following 183 orbits of the Earth in 269 hours and 46 minutes, the eleven-day mission ended with Space Shuttle Endeavour landing at Edwards Air Force Base, California. ...

... How to Spot a Pale Blue Dot in the Night Sky - Signatures of Life on Extrasolar Planets . ... Frame 2: Steamy atmosphere, an ocean is covering the entire planet, no oxygen is present, timeline about four billion years ago. ... Using such telescopes as Kepler, James Webb Space Telescope (JWST), Darwin and Terrestrial Planet Finder (TPF), and masking the star light, the light from small Earth-like planets can be collected and analyzed. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...