... 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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• A Spectacular View of the Lagoon Nebula | Astronotes
• Our Galaxy | Astronotes - Part 2
• ESO finds weird doomed planet from another galaxy | Astronotes

... No sudden, sharp boundary marks the passage of day into night in this gorgeous view of ocean and clouds over our fair planet Earth. ... The Stars of NGC 1705 . ... Some 2,000 light-years across, NGC 1705 is small as galaxies go, similar to our Milky Way's own satellite galaxies, the Magellanic Clouds. ... Springtime on Mars . ... The Gum Nebula Supernova Remnant . ... Because the Gum Nebula is the closest supernova remnant, it is actually hard to see. ... A Crescent Nebula Star Field . ...

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... We sometimes use the word "nebula" to refer to galaxies, various types of star clusters and various kinds of interstellar dust/gas clouds. ... Early in this century, there was a great debate as to the nature of the nebulae like this one which at that time could not be resolved into individual stars. ... A typical galaxy is 100,000 light-years in diameter. ... M 42 shown) Reflection nebulae are clouds of dust which are simply reflecting the light of a nearby star or stars. ... M 1 shown) . ...

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• APOD Index - Galaxies: Local Group
• APOD: 2011 February 19 - Spiral Galaxy NGC 2841 Close Up
• APOD: 2004 May 29 - Cone Nebula Close Up

. Go Here for Hubble Ultra Deep Field . ___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

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• Low Surface Brightness Galaxy Gallery
• The Galaxy Gallery: Messier Objects
• galaxies, Hubble sequence

... General information . ... Staff . Research staff . ... Information . ... Historical highlights . Historical research . ... This process is thought to occur in circumstellar disks of gas and dust around young stars on rather short timescales : infrared surveys show that the number of low mass stars with disks drops dramatically for stars older than 10 Myr, suggesting that in order to form large solids before the disk disperses, the growth process has to take place within a few million years. ...

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• INAF - Arcetri Astrophysical Observatory
• STScI- PRC99-10: Hubble's Infrared Galaxy Gallery
• Dust grains from the heart of supernovae

... We still have a long distance to cover before we leave the Milky Way Galaxy -- tens of thousands of lightyears, as a matter of fact -- so let's stop by some interesting objects on the way. ... But we have reached the edge of the Milky Way Galaxy. ... We don't know, but we do know that there are countless voyages left to take. To continue the virtual voyage beyond our galaxy, go to Kent Cheatham's "A Walk in the Stars" at http://www.ionet.net/~cheatham/astro/astrotour.shtml . ...

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• ASP: Sharing the Universe
• ASP: Miranda: A Jigsaw Puzzle World
• ASP: More About Deep Space Objects and Cosmic Terms

... Like a last gasp of breath, Sun-like stars puff away their outer layers of gas at the end of their lives. This gas floats away into space and forms beautiful and striking clouds, which are called planetary nebulae (although they have nothing to do with planets). ... Yet, astronomers looking at 100 planetary nebulae in the bulging centre of our Galaxy, the Milky Way have found that most of the bipolar planetary nebulae in this region are acting in the same, strange, way. ...

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• http://www.eso.org/public/news/eso1404/kids/
• Los Cielos de Am , The darkest sky and the two galactic hemispheres

Next: Stealth Comets Up: W.M. Napier Previous: W.M. Napier Contents . ... If material ejected from the Earth contains microorganisms and spores, the question arises whether life may be carried from planet to planet within the solar system. ... However, the solar system is tiny on the scale of the Galaxy, and it has generally been thought that the transfer of life between stars is impossible -- the microorganisms would be destroyed by cosmic rays, ultraviolet light and so on. ...

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• FETTU - Page 1
• ASTRONOMICAL PHENOMENA FROM MARS
• Spread of Life through the Galaxy

My research efforts have focused on three areas which are: . More than 200 extrasolar planets have been discovered around relatively nearby stars, primarily through the Doppler line shifts owing to the reflex motions of their host stars, and more recently through transits of some planets across the face of the host stars. ... Gravitational microlensing provides a novel technique to look for planets around lens stars, and this is the only technique currently capable of detecting Earth-mass planets. ...

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• Spitzer Analysis of H II Region Complexes in the Magellanic Clouds: Determining
• HST this week: 296
• Local astronomers find gigantic halo around neighboring galaxy - By MEGHA

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

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• Phil Plait's Bad Astronomy: Q and BA

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

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• The Discovery of the Solar System--lesson plan #17
• The Path of the Sun, the Ecliptic

... Star Atlas . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... galaxies . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Dave's Universe . ... Everything around us is spinning: particles, planets, stars, galaxies. ... Planets rotate, as do stars and galaxies. ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...

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• Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets,
• A new survey found planets skimming a starт??s surface | Astronomy.com
• Would it be possible to find a moon around an extrasolar planet? If so, how? |

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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• http://www.aaa.org/s932/images/09fallclass3.pdf

... Planet Ziggy seems to be located in the outer regions of an elliptical galaxy, or perhaps in a globular cluster orbiting such a galaxy. ... We have not been able to detect any spiral galaxies elsewhere in the sky. ... Iif they are too small for their gravity to achieve this. force holding the two objects together ­ strongly suggests that these objects are Page 1 The Milk Stain No milky-way is seen. ... We are calling it the Milk Stain. This could be an elliptical galaxy or a globular cluster. ...

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• http://www.mso.anu.edu.au/pfrancis/roleplay/ziggy/model_answer2.doc
• http://www.mso.anu.edu.au/~bessell/thumbnails/images.txt
• Philip Lah's Research

... High-velocity clouds (HVCs) were discovered by Muller, Oort & Raimond (1963) in the 21-cm line emission of neutral, atomic hydrogen. They are gas clouds which are characterised by high radial velocities incompatible with a participation in the rotation of our Galaxy. ... This suggestion was seized by Braun & Burton (1999) who identified 66 compact high-velocity clouds (CHVCs) with positional and kinematic characteristics being compatible with a distribution across the entire Local Group. ...

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• A new twist to polar rings
• Research - The high-velocity clouds of M31
• Evolutionary Paths in Galaxy Morphology

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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• The Solar System
• The Origin of the Solar System
• Mercury

... AstroGuide | ... Astro Images . ... Image by Jason Ware, Galaxy Photo . ... Courtesy of Jason Ware, Galaxy Photo . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... 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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• The Astronomy Shop - Posters - by Astronomy Net
• The Astronomy Shop - Cards - by Astronomy Net
• Summer Triangle - an Astronomy Net Article

Collins School Star Party - Oct. 5, 1999 Presented by the North Shore Amateur Astronomy Club (NSAAC) For more information: NSAAC: http://www.star.net/people/~nsaac 1.0 Using a telescope Close one eye (use your hand if it's easier) and look straight down into the eyepiece. ... Massive stars use up their fuel much faster - in some cases less than 100 million years. ... Jupiter _____. ... With the chart at left and using the brightest stars as a guide, see if you can find Uranus with binoculars. ...

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• Amateur Telescope Makers of Boston

... galaxies: bulges galaxies: clusters: general galaxies: clusters: individual: . ... star formation statistics stellar content structure Cosmology ( cosmology :) cosmic background radiation ( cosmology :) cosmological parameters cosmology : miscellaneous cosmology : observations cosmology : theory ( cosmology :) dark ages, reionization, first stars ( cosmology :) dark energy ( cosmology :) dark matter ( cosmology :) diffuse radiation ( cosmology :) distance scale ( cosmology :) early Universe (...

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• RCJ0311+0507
• Metagalaxy sector, archive 2011
• A unique isolated dwarf spheroidal galaxy KKR25

... Confirmation that a mysterious cloud of hydrogen in the Virgo Cluster is a dark galaxy has been published by a team of astronomers . New evidence from NASA's Hubble Space Telescope and the Westerbork Synthesis Radio Telescope in the Netherlands has been used to rule out all but one of the ideas put forward to explain the existence of VIRGOHI 21, an intergalactic gas cloud 50 million light-years from the Earth. ... Only Dark Matter can account for the existence of such a system. ...

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• The Search for HVCs in Other Galaxies
• The Large Magellanic Cloud
• AGES - the Arecibo Galaxy Environment Survey