Planetary nebula - Wikipedia, the free encyclopedia
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A planetary nebula is an emission nebula consisting of an expanding glowing shell of ionized gas and plasma ejected during the asymptotic giant branch (AGB) phase of certain types of stars late in t...
en.wikipedia.org/wiki/Planetary_nebula
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Crab Nebula - Wikipedia, the free encyclopedia
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The Crab Nebula (catalogue designations M1, NGC 1952, Taurus A) is a supernova remnant and pulsar wind nebula in the constellation of Taurus. The nebula was first observed by John Bevis in 1731, an...
en.wikipedia.org/wiki/Crab_Nebula
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Nebula, plural Nebulae ... Nebulae are made of diffuse matter comprising dust and gas. They are located inside the disk of our galaxy, the Milky Way. Therefore, we can only see nebulae which are at a relatively short distance from the sun (between 400 and 10,000 light years), the others being masked by the galaxy dust.
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astrim.free.fr/aboutnebula.htm
astrim.free.fr/aboutnebula.htm
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Content on this page requires a newer version of Adobe Flash Player. ... Learn About Nebulae With KidsAstronomy.com ; A nebulae is a cloud of gas and dust in outer space. These clouds are often very large, spanning across many light years. There are many different kind of nebulas in the sky. ... How do they emit light?
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www.kidsastronomy.com/nebulae.htm
www.kidsastronomy.com/nebulae.htm
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Nebulas are large clouds of gas in space often measuring light years in size and are made up of hydrogen, helium and star dust. Nebulas are formed in two ways: (1) from the creation of the solar system or two from the gas left behind from stars that have exploded in a super nova or nova.
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www.kinderscience.com/nebulas.htm
www.kinderscience.com/nebulas.htm
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Dark nebulas are made mostly of dust. Dark nebulas block out the light/energy that comes from stars and bright nebulas. From earth dark nebulas look like dark patches in the sky. Some nebulas, like the horsehead nebula (also a constellation) have very interesting shapes.
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www.yesnet.yk.ca/schools/stelias/oldsite/science/Astron...
www.yesnet.yk.ca/schools/stelias/oldsite/science/Astronomy/nebulas.html
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Left image: The X-ray data from the Chandra X-ray Observatory have revealed a bright central star surrounded by a cloud of multimillion-degree gas in the planetary nebula known as the Cat's Eye. ... The color composite of optical and X-ray images was made by Zoltan G. Levay (Space Telescope Science Institute).
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chandra.harvard.edu/photo/2001/1220/index.html
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This image of the Cat's Eye Nebula was made by combining data from two of NASA's Great Observatories--Chandra and the Hubble Space Telescope. Data from the Chandra X-ray Observatory revealed a bright central star surrounded by a cloud of multimillion-degree gas in the planetary nebula known as the Cat's Eye.
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www.nasa.gov/multimedia/imagegallery/image_feature_1450...
www.nasa.gov/multimedia/imagegallery/image_feature_1450.html
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M57 the Ring Nebula (back) Fitted T-shirt with the Hubble Space Telescope (front) is great Holiday and Christmas present from Spacemart the Space and Astronomy Online Gift Shop. ... For stylish weekend comfort anytime, guys will want to live in our Fitted T. Made of ultra-fine, combed ring-spun cotton, that gets softer...
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www.cafepress.com/ringnebula.8368882
www.cafepress.com/ringnebula.8368882
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