M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

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• Formation of the Earth
• Intelligent Life On Earth?
• Planetary Formation

... 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 . ...

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• Objects in the Sky
• Armagh Observatory Small Asteroids
• Why Asteroid 2008 TC3 Represents a Landmark - Dr David Asher, from Armagh

... There has been a heated public discussion in the past few years about whether our ninth planet is really deserving of the name. Since Pluto orbits a star, and is much less luminous, it certainly satisfies the definition we have above. The problem is actually not with Pluto, but with a very large number of other bodies in our Solar System which also satisfy this definition, but which are not called planets. Perhaps the most notable of these is Ceres, the largest asteroid. ... Planet . ...

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• ASP: Black Holes
• ASP: Making Your Own Astronomical Camera
• ASP: Monster Comet Promises Big Show

... In addition to the planets and their satellites the solar system contains a large number of smaller but interesting objects. There are thousands of known asteroids and comets and undoubtedly many more unknown ones. ... There are also some asteroids whose orbits carry them closer to the Sun than the Earth (Aten, Icarus, Hephaistos). Most comets have highly elliptical orbits which spend most of their time in the outer reaches of the solar system with only brief passages close to the Sun. ...

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• APOD: 2013 March 15 - CME, Comet, and Planet Earth
• Seeing the Solar System
• APOD: 2006 March 28 - Animation of Asteroids Passing Near Earth

... In addition to the planets and their satellites the solar system contains a large number of smaller but interesting objects. T here are thousands of known asteroids and comets and undoubtedly many more unknown ones. ... There are also some asteroids whose orbits carry them closer to the Sun than the Earth (Aten, Icarus, Hephaistos). Most comets have highly elliptical orbits which spend most of their time in the outer reaches of the solar system with only brief passages close to the Sun. ...

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• Introduction to The Nine Planets
• Solar System Extrema
• Seeing the Solar System

... SATELLITE: An object that revolves around a planet. ... SIDEREAL DAY: The length of a planet's rotation period relative to the stars. SOLAR SYSTEM: The sun and all the objects that are held in its gravitational field and move around it. ... SUPERIOR CONJUNCTION: The position of a planet when it is on the opposite side of the Sun from Earth (thus making in invisible). ... TRANSIT: The movement of an object between the Earth and the Sun and showing on the surface of the sun as a black dot. ...

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• Astronomical Glossary - J thru M
• Astronomical Glossary - G thru I
• Astronomical Glossary - N thru R

... Asteroid . ... In case you didn't hear about it, which you probably didn't: On Jan. 7, an asteroid 1,000 feet across -- nearly three times the current diameter of Marlon Brando -- barely missed the Earth, which is most likely your planet of residence. ... What if this asteroid had hit the Earth? ... As it happens, the American Astronomical Society was holding a conference in Washington AT THE VERY SAME TIME as the asteroid nearly hit the Earth. ...

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• Winer Observatory - User Science

... Small Star . ... A dim double star system cataloged as Gliese 623 lies 25 light-years from Earth, in the constellation of Hercules. ... NGC 2070 is an immense star forming region in a nearby galaxy known as the Large Magellanic Cloud. ... Venus' Once Molten Surface . ... Magellan orbited Venus and used radar to map our neighboring planet's surface between 1990 and 1994. ... Majestic on a truly cosmic scale, M100 is appropriately known as a Grand Design spiral galaxy. ... Moonrise, Planet Earth . ...

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The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . This project was established in mid-1998 to help coordinate, and provide a focal point for, the study of those comets and asteroids that can approach the Earth's orbit. ... Web Site . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

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• Lowell Observatory Near-Earth Object Search - LONEOS, AstroGuide Listing
• Astronomy articles, forums, listings, and other resources about Astronomy.
• Near-Earth Asteroid Tracking - NEAT, AstroGuide Listing

... 8, ``Celestial Mechanics'', 2002 Formation and migration of trans -- Neptunian objects S. I. Ipatov 1;2 1 Institute of Applied Mathematics, Moscow, Russia 2 NASA/GSFC, Greenbelt, USA We support the Eneev's idea [1] that the largest (with diameter d?100 km) trans ­ Neptunian objects ( TNOs ) moving now in not very eccentric orbits ... The total amount of water delivered to the Earth during the formation of the giant planets was about the mass of water in the Earth's oceans. ...

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• (Untitled)
• Keywords_84
• Keywords_244

... Bad Astronomy . ... Mad Science . ... if hubble was pointed at earth, what could it resolve? is it too bright? ... This type of image is called a ``flat field'', because you want the field of view to look as flat as possible. In space there aren't any flat fields you can use, but we do have one right here: the Earth. ... It takes a lot of sophisticated computer processing to turn this into a real flat field for Hubble to use, but luckily there are a lot of smart people working on the problem. ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Misconceptions
• Phil Plait's Bad Astronomy: Bitesize Tour of the Solar System

... Planets . ... Earth Satellites . ... The newly discovered ?mega-Earth? ... Its sibling, the lava world Kepler-10b, is in the background (the two planets? proximity is grossly exaggerated) .€а Kepler-10c has a diameter of about 29 000 km, 2.3 times as large as Earth, and weighs 17 times as much. ... The first mega-earth to be discovered is Kepler-10c which orbits a star lying about 560 light years from the Sun in the constellation Draco. ... Astronomers Find a New Type of Planet: The ?Mega-Earth? ...

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• Kepler-10b: world of lava oceans? | Astronotes
• Other Galaxies | Astronotes
• Rings Around an Asteroid | Astronotes

... The remote planet Pluto and its moon Charon orbit the Sun at a mean distance of almost 6,000 million kilometres, or nearly fourty times farther out than the Earth. During a recent investigation by an international group of astronomers [1], the best picture ever of Pluto and Charon [2] was secured with the European Space Agency's Faint Object Camera at the Hubble Space Telescope (HST). ... The new HST image was taken when Charon was near its maximum elongation from Pluto (0.9 arcseconds). ...

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• Animation of artistтАЩs impression of the super-Earth planet HD 85512 b | ESO
• ESO Movie 27d: Astronomy from Planet Earth (Italian) | ESO
• ESO Movie 27d: Astronomy from Planet Earth (Italian) | ESO United States

... Tonight's Sky . ... The Magazine . ... Observing . ... 50 Weirdest Objects . ... Supernova showered Earth with radioactive debris . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Observing springtime deep-sky objects with a large telescope . ... near earth objects . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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• Small asteroid to whip past Earth June 27 | Astronomy.com
• Do other planets have meteor showers like Earth has? Can we see them through
• Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets,

James Webb Space Telescope: A steroids & Near-Earth Objects J W S T will enable a s ter oid obser vations at key inf r ared waveleng ths that are impos sible to acces s f r om the gr ound, and with a combination of sensitivit y and waveleng th cover age va s tly superior to previous space ba sed obser vatories and complement ar y to SOF I A and f uture ground-ba sed obser vatories. ... NEOs will not be resolved, but the high sensitivity of the instruments will enable studies of rotational variation. ...

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• http://www.stsci.edu/~mutchler/documents/Geotimes_Pluto.pdf
• Planet Finder Options I: Linear Nulling Arrays for Studying Earth-Like Planets
• Detection of Earth-like Planets with the COROT Space Mission

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

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• Atmospheres
• Surface Gravity
• Summary

... Listed below are questions submitted by users of "The Exploration of the Earth's Magnetosphere" and the answers given to them. ... The ones included below are either of the sort that keeps coming up again and again--the danger of solar eruptions, the reversal of the Earth's magnetic field, etc.-- or else the answers make a special point, going into extra details which might interest other users. ... Radiation Belts and Manned Space Flight . ... Capturing the Energy of the Solar Wind . ...

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• CURRENT ASPECTS OF REMOTE SENSING OF EARTH FROM SPACE
• Space Research Institute (IKI) Seminar
• The Scale of the Solar System

Educator's Guide to Eclipses . ... In a solar eclipse you observe the Sun (using only safe methods, of course). ... In a lunar eclipse you observe the Moon. ... Because of the geometry described below, you can only view a solar eclipse when the Sun is up, and the Moon is nowhere to be seen. ... Eclipses occur when the Sun, Earth and Moon line up. ... In a solar eclipse the Moon passes directly in front of the Sun. ... In a lunar eclipse the Moon moves into Earth's shadow. ...

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• Hubble Detects Long-Sought Comet Population Beyond Neptune
• The Arcetri NEO Precovery Program
• Educator's Guide to Micrometeorites

Arecibo Observatory took radar images of asteroid 1998 QE2 and its moon as the space rock sailed safely past earth. The sequence of images show a dark, cratered asteroid 3.0 kilometers across (1.9 miles) across with a companion moon about 750 meters (2500 feet) in size. Both the asteroid and its moon passed 6 million kilometers (3.8 million miles) from earth. ... Radar images of asteroid 1998 QE2 (bottom) and its satellite (top) on June 6. ... Comparisons of QE2 to the size of an ocean liner . ...

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• Solar System Studies at AO
• Arecibo Radar Discovers Triple Near-Earth Asteroid
• Arecibo Observatory observations of 2005 YU55

Общая Астрономическая Конференция > Практика > Астрономический наблюдательно-информационный портал > Хвостатые гостьи (все о кометах) > C/2016 A8 (LINEAR) _ CK16A080 _ LM04Jwy object = 220-я Lincoln Near Earth Asteroid Research (LINEAR)! ... Просмотр полной версии : C/2016 A8 (LINEAR) _ CK16A080 _ LM04Jwy object = 220-я Lincoln Near Earth Asteroid Research (LINEAR)! ... Открытая комета C/2016 A8 (LINEAR) _ CK16A080 - 220-я в активе проекта Lincoln Near Earth Asteroid Research (LINEAR) .. ...

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• C/2014 A4 (SONEAR) _ CK14A040 _ S002239 object - 1-ая SONEAR (Southern
• Астероид 2014 SC324 (Apollo, ? = 51 м) 24 октября 2014 года в 0.003767708 a.e.
• Астероид 2015 VO142 (Apollo, ? = 5 м) 24 ноября 2015 года в 0.002614328 a.e.