... 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 36b and c: Too Close for Comfort | Astronotes
• The Blue Planet | Astronotes
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I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

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• Artist's impression of the asteroid Lutetia making a close approach to a planet

... Bad Astronomy . Misconceptions . ... Bad Astronomy : The Moon only shows one face to us because it is not rotating. Better astronomy : The Moon only shows one face because it is rotating, once every time it revolves around the Earth. ... Place the Moon model on the table about 30 centimeters (one foot) away with the X facing the Earth model. ... You'll see that to keep the X facing the Earth model, you have to rotate the Moon model as it goes around the Earth model . ... 2008 Phil Plait. ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Bad News:
• Phil Plait's Bad Astronomy: Mad Science

... More on 51 Peg: . The discovery of a Jupiter--mass planet in orbit around the solar--type star 51Peg has been reported by Michel Mayor and Didier Queloz (Geneva Observatory) on October 6th at the 9th Cambridge workshop on "cool stars, stellar systems, and the sun" held at Florence (Italy). ... Recall that the measurements of radial velocity only yield v sin i which in turn gives us M sin i. For most values of i, sin i will be greater than 0.5 and this gives a mass estimate of 0.5 Jupiter masses. ...

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... August 14, 1995 . Mercury: Closest Planet to the Sun . ... Explanation: This picture was compiled from images taken by the NASA spacecraft Mariner 10 which flew by the planet three times in 1974. Mercury is the closest planet to the Sun , the second hottest planet (Venus gets hotter), and the second smallest planet (Pluto is smaller). Mercury rotates so slowly that one day there - "day" meaning the normal time it takes from sunset to sunset - lasts 176 days on Earth . ...

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• APOD: 2016 January 18 - Proxima Centauri: The Closest Star
• APOD: 2009 October 22 - Moon and Planets in the Morning
• GALILEO READY FOR CLOSE FLYBY OF JUPITER'S BIGGEST MOON

Astronomy Picture of the Day . Mercury: Closest Planet to the Sun . ... Credit Copyright: NASA , Mariner 10 Explanation: This picture was compiled from images taken by the NASA spacecraft Mariner 10 which flew by the planet three times in 1974. ... Mercury rotates so slowly that one day there - "day" meaning the normal time it takes from sunset to sunset - lasts 176 days on Earth . ... U. Based on Astronomy Picture Of the Day . Publications with keywords: Mercury . ... MESSENGER s First Day . ...

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• Астронет > Mercury: Closest Planet to the Sun
• Moon and Planets in the Morning
• Gliese 832c: The Closest Potentially Habitable Exoplanet

... The planet in orbit around 51 Peg has, according to theoretical models, moved into its current position from farther away and its atmosphere may therefore be strongly evaporating. The molecules released by the upper parts of the atmosphere must be rapidly ionized and could form an envelope around the planet. If the planet passes in front of the star, this envelope is in favorable geometric conditions (the inclination angle of the orbit is close to 90?) which allow it to occult the star. ...

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• http://www.stsci.edu/stsci/meetings/planets/abs/prog29.html
• Research Interests
• Target Selection for Planet Searches

The stability of planetary systems after stellar mass loss : Prospects for White Dwarf planets and pollution Alexander James Mustill1*, Dimitri Veras2, Eva Villaver3, Amy Bonsor4, Boris GДnsicke2, Mark Wyatt 1 2 5 Lund Observatory ... 1TL, United Kingdom 5 Institute of Astronomy, University of Cambridge, Madingley Road, CB3 9ET, UK *alex@astro.lu.se Stars lose mass as they evolve to become white dwarfs ( WDs ), and this mass loss can induce ...

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• Astrophysics Group Research and Instrumentation
• Samantha Thompson - Research

... Venus, the brightest planet, and Jupiter the second brightest (apart from Mars on very rare occasions) will appear very close together in the Eastern morning sky! ... Venus will be magniute -4.0, and Jupiter mag. ... Callisto, Jupiter's outermost Galilean moon, will then be 7' to the West of Jupiter, so Venus will be just about 4.5 times further away. ... The Last Quarter Moon will be 55 degrees away to the upper right of Venus, with Saturn (mag 0.1) another 16 degrees beyond the Moon. ...

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• Armagh Observatory
• Searching for Planets Around Other Stars - from Galway: Monday 13 October 2008
• Armagh Astropark: The Planets

5th of July 2015 . Planet formation around HD100546 . ... Australia Telescope Compact Array (ATCA) image of the protoplanetary disk around the young star HD100546. This young, massive star is about 100 pc from the Earth and the image shows the thermal emission from the dusty disk seen at a wavelength close to 7 mm. The emission is shaped like a horseshoe, with material from the inner disk being cleared out by an embedded planet. Image adapted from Wright et al. ... today * ATNF | ...

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• Things to watch:
• Australia Telescope National Facility
• Diffuse gas in and around the Milky Way - Registration

... When the Voyager 2 spacecraft flew by the planet Uranus in January 1986, astronomers were treated to their first close-up glimpse of the satellites that orbit the seventh planet. ... But by far the most intriguing of those 15 satellites was a jigsaw-puzzle world called Miranda . ... How dark was it at Miranda? One of the Voyager scientists put it this way: Taking pictures in the Uranus system is like trying to do photography in a ballpark at night when the only light comes from a single candle. ...

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• ASP: A Good Definition of the Word "Planet": Mission Impossible?
• ASP: Astronomy in the News
• ASP: Up, Up, and Away

... STScI-PRC99-27 A CLOSER ENCOUNTER WITH MARS Taking advantage of Mars's closest approach to Earth in eight years, astronomers using NASA's Hubble Space Telescope have taken the space-based observatory's sharpest views yet of the Red Planet. ... In these views the north polar cap is tilted toward the Earth and is visible prominently at the top of each picture. ... Dark sand dunes that surround the polar cap merge into a large, dark region called Acidalia. ...

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• Dust evolution across the CO snowline in a protoplanetary disk
• Hubble Detects Long-Sought Comet Population Beyond Neptune
• APOD: December 17, 1996 - Mariner's Mercury

The apparent path of the Sun across the sky. ... The path of the Sun across the celestial sphere is very close to that of the planets and the moon. ... In one year, as the Earth completes a full circuit around the Sun (drawing above), the Earth-Sun line and its continuation past Earth sweep the entire plane. ... Since the Sun and Earth are in the plane of the ecliptic, the line is automatically in that plane too; if the moon is also on the same line, it must be in the plane of the ecliptic as well. ...

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• To the Planets, to the Stars
• Introduction to The Nine Planets
• Newton's theory of "Universal Gravitation"

This image zooms into a small portion of Kepler's full field of view - an expansive, 100-square-degree patch of sky in our Milky Way Galaxy. At the center of the field is a star with a known "hot Jupiter" planet, named "TrES-2," zipping closely around it every 2.5 days. ... The area pictured is 1/1000 of Kepler's full field of view, and shows hundreds of stars at the very edge of the constellation Cygnus. ...

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BF17C5CBA-B290-4032-9A18-B2BE30B0281D%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B44318988-ED6A-48D2-967C-A16A40949DEF%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B417951BB-7BD7-4D42-99AC-7C37A1DCCC43%7D

Harvest Moon . ... The Harvest Moon refers to the Full Moon that comes closest to the autumnal equinox, or the first day of autumn. Depending on the year, the Harvest Moon can fall anywhere from two weeks before to two weeks after the equinox, which arrives annually on or near September 23. ... It was once common knowledge that at the vicinity of Full Moon, the Moon rises around sunset, shines all night long and sets around sunrise. ... Re-published on Astronomy Net with permission of the author. ...

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• Pluto Is Not A Planet, But A Moon Of Neptune. - an Astronomy Net God Science
• Moon, Planets And Aurora, Oh My! - an Astronomy Net Article
• Your First Telescope - an Astronomy Net Article

In ancient times the solar system was thought to be the whole Universe, so the study of planetary motions was cosmology. ... The planets other than the Moon and Sun generally move West to East through the stars, but occasionally stop and move in the opposite direction ( retrograde motion). In order to explain the retrograde motion of the planets, the geocentric model of the Solar System shown above puts the planets on small circles called epicycles . ...

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... The Australian National University] [Department of Physics] [Paul Francis] [Main Roleplay Page] . These exercises are my attempt to adapt the technique of Problem Based Learning to the context of introductory astronomy and astrophysics classes. ... As students grapple with the puzzle, they are forced to learn the subject matter of the course. ... This exercise is designed for 1st year University students with a reasonable high-school background in Maths and Physics. ...

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• Mars with south polar ice cap at top
• Ganymede
• Siding Spring Survey 2003 XB22

... The study of extra solar planets will be one of the most important areas of research in astronomy in this century. ... The first planets outside the solar system were found in 1992 around the millisecond pulsar PSR B1257+12 by Alex Wolszczan at the Arecibo Observatory . ... Three space missions based on this principle (MOST, COROT and Kepler ) have already been launched or approved, and have the last one at least has the potential to find Earth-sized planets. ... SIM ( NASA ) is one of such missions...

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• Arecibo Planetary Radar Implementation Tasks
• anritsu mg3692c synthesizer
• cband stability with shutter closed

Galushina T., Bykova L., Letner O., Baturin A. Tomsk State University Russia 1 Investigation Dynamics Asteroid of of 2 Solving problems construction of numerical model of asteroid motion with account chosen perturbed factors; asteroid orbit improvement according to positional observations; construction of initial probabilistic domain by linear and nonlinear methods; study of evolution of initial probabilistic domain; revealing of ...

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• http://www.gao.spb.ru/english/as/j2014/presentations/shevchenko.pdf
• Pulkovo NEO Page: General Information

... Spacecraft . ... To space by cannon? Finally, the deep space explorers --spacecraft which break away from the Earth's gravity . ... The "Luna" series of the USSR conducted 7 soft landing of unmanned probes, two of them with wheeled robotic "Lunokhods," and two of those missions returned samples to Earth. Others spacecraft have visited the major planets of the Solar system. ... The Mariner series have explored Venus and Mars--and Mariner 10 even reached Mercury, for three separate encounters! ...

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• The Acceleration of the Aurora
• The Path of the Sun, the Ecliptic
• Lagrangian Points