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Cũ 16-12-2007   #21
metallicr
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Uncovering the Veil Nebula

This image is a stunning close-up of the Veil Nebula - the shattered remains of a supernova that exploded some 5-10,000 years ago. The image provides a beautiful view of the delicate, wispy structure resulting from this cosmic explosion. Also known as Cygnus Loop, the Veil Nebula is located in the constellation of Cygnus, the Swan, and is about 1,500 light-years away from Earth.

This small portion of the Veil Nebula is located in the larger segment seen in its western part (the top left corner of the large ground-based overview image). The entire structure spans about 3 degrees, corresponding to about 6 full moons.

The image was taken with Hubble's Wide Field and Planetary Camera 2 (WFPC2). The colour is produced by composite of three different images. The different colours indicate emission from different kinds of atoms excited by the shock: blue shows oxygen, green shows sulphur, and red shows hydrogen.

Credit: NASA, ESA, and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration. Acknowledgment: J. Hester (Arizona State University)

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Id:heic0712b
Object:Veil Nebula, Cygnus Loop, NGC 6992, NGC 6995, NGC 6960, Cirrus Nebula, LBN 191
Type:Nebula

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Cũ 16-12-2007   #22
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The Cat's Eye Nebula

This Hubble Space Telescope image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the 'Cat's Eye Nebula.' Hubble reveals surprisingly intricate structures including concentric gas shells, jets of high-speed gas and unusual shock-induced knots of gas. Estimated to be 1,000 years old, the nebula is a visual 'fossil record' of the dynamics and late evolution of a dying star.

Credit: J.P. Harrington and K.J. Borkowski (University of Maryland), and NASA/ESA

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Press Release
Id:opo9501c
Object:Cat's Eye Nebula, NGC 6543, IRAS 17584+6638A
Type:Nebula

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Cũ 16-12-2007   #23
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The Egg Nebula

This image of the Egg Nebula, also known as CRL2688 and located roughly 3, 000 light-years from us, was taken in red light with the Wide Field and Planetary Camera 2 (WFPC2) aboard the Hubble Space Telescope.

This image sheds new light on the poorly understood ejection of stellar matter which accompanies the slow death of Sun-like stars. The image is shown in false color.

Credit: Raghvendra Sahai and John Trauger (JPL), the WFPC2 science team, and NASA/ESA

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Press Release
Id:opo9603a
Object:Egg Nebula, CRL 2688
Type:Nebula

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Cũ 16-12-2007   #24
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The Hourglass Nebula

This is an image of MyCn18, a young planetary nebula located about 8,000 light-years away, taken with the Wide Field and Planetary Camera 2 (WFPC2) aboard the Hubble Space Telescope (HST).

This Hubble image reveals the true shape of MyCn18 to be an hourglass with an intricate pattern of 'etchings' in its walls. This picture has been composed from three separate images taken in the light of ionized nitrogen (represented by red), hydrogen (green), and doubly-ionized oxygen (blue).

The results are of great interest because they shed new light on the poorly understood ejection of stellar matter which accompanies the slow death of Sun-like stars. In previous ground-based images, MyCn18 appears to be a pair of large outer rings with a smaller central one, but the fine details cannot be seen.

Credit: Raghvendra Sahai and John Trauger (JPL), the WFPC2 science team, andNASA/ESA

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Press Release
Id:opo9607a
Object:Hourglass Nebula, MyCn 18
Type:Nebula

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Cũ 16-12-2007   #25
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Hubble Sees Supersonic Exhaust From Nebula

M2-9 is a striking example of a 'butterfly' or a bipolar planetary nebula. Another more revealing name might be the 'Twin Jet Nebula.' If the nebula is sliced across the star, each side of it appears much like a pair of exhausts from jet engines. Indeed, because of the nebula's shape and the measured velocity of the gas, in excess of 200 miles per second (approx. 322 kilometres per second), astronomers believe that the description as a super-super-sonic jet exhaust is quite apt. Ground-based studies have shown that the nebula's size increases with time, suggesting that the stellar outburst that formed the lobes occurred just 1, 200 years ago.

Credit: Bruce Balick (University of Washington), Vincent Icke (Leiden University, The Netherlands), Garrelt Mellema (Stockholm University), and NASA/ESA

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Long Caption
Press Release
Id:opo9738a
Object:Twin Jet Nebula, IRAS 17028-1004
Type:Nebula

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Cũ 16-12-2007   #26
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Massive Starbirth in N81


A NASA/ESA Hubble Space Telescope 'family portrait' of young, ultra-bright stars nested in their embryonic cloud of glowing gases. The celestial maternity ward, called N81, is located 200, 000 light-years away in the Small Magellanic Cloud (SMC), a small irregular satellite galaxy of our Milky Way.

Credit: Mohammad Heydari-Malayeri (Paris Observatory, France), NASA/ESA

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Press Release
Id:opo9825a
Object:LHA 120-N 81, N81, Small Magellanic Cloud, SMC, NGC 292
Type:Nebula

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Cũ 16-12-2007   #27
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Blowing Cosmic Bubbles


This NASA/ESA Hubble Space Telescope image reveals an expanding shell of glowing gas surrounding a hot, massive star in our Milky Way Galaxy. The shell is being shaped by strong stellar winds of material and radiation produced by the bright star at the left, which is 10 to 20 times more massive than our Sun.

Credit: Hubble Heritage Team (AURA/STScI/NASA/ESA)

Info
Long Caption
Press Release
Id:opo9828e
Object:NGC 7635, Bubble Nebula
Type:Nebula

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Cũ 16-12-2007   #28
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Hubble Snapshot Captures Life Cycle of Stars


In this stunning picture of the giant galactic nebula NGC 3603, the crisp resolution of the NASA/ESA Hubble Space Telescope captures various stages of the life cycle of stars in one single view.

Credit: Wolfgang Brandner (JPL/IPAC), Eva K. Grebel (Univ. Washington), You-Hua Chu (Univ. Illinois Urbana-Champaign), and NASA/ESA

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Press Release
Id:opo9920a
Object:NGC 3603
Type:Star Cluster, Nebula

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Cũ 16-12-2007   #29
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Hubble's Variable Nebula (NGC 2261)

Hubble's variable nebula is named (like the Hubble telescope itself) after the American astronomer Edwin P. Hubble, who carried out some ofthe early studies of this object. It is a fan-shaped cloud of gas and dust which is illuminated by R Monocerotis (R Mon), the bright star at the bottom end of the nebula. Dense condensations of dust near the star cast shadows out into the nebula, and as they move the illumination changes, giving rise to the variations first noted by Hubble. The star itself, lying about 2,500 light-years from Earth, cannot be seen directly, but only through light scattered off of dust particles in the surrounding nebula. R Mon is believed to have a mass of about 10 times that of the Sun, and to have an age of only 300,000 years. There is probably a symmetrical counterpart of the fan-shaped nebula on the southern side of the star, but it is heavily obscured from view by dust lying between this lobe and our line of sight.

The Hubble Heritage team made this image from observations of R Mon acquired by William Sparks (STScI), Sylvia Baggett (STScI) and collaborators.

Credit: NASA/ESA and The Hubble Heritage Team (AURA/STScI).

Info
Id:opo9935c
Object:R Mon, NGC 2261, IRAS 06364+0846
Type:Nebula

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Cũ 16-12-2007   #30
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A Reflection Nebula in Orion

Just weeks after NASA astronauts repaired the Hubble Space Telescope in December 1999, the Hubble Heritage Project snapped this picture of NGC 1999, a nebula in the constellation Orion. The Heritage astronomers, in collaboration with scientists in Texas and Ireland, used Hubble's Wide Field Planetary Camera 2 (WFPC2) to obtain this colour image.

Credit: NASA/ESA and the Hubble Heritage Team (STScI)

Info
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Press Release
Id:opo0010a
Object:NGC 1999
Type:Nebula

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