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The Helix Nebula from CFHT
| Title |
The Helix Nebula from CFHT |
| Explanation |
One day our Sun may look like this. The Helix Nebula [ http://antwrp.gsfc.nasa.gov/apod/ap960417.html ] is the closest example of a planetary nebula [ http://antwrp.gsfc.nasa.gov/apod/planetary_nebulae.html ] created at the end of the life of a Sun-like star. The outer gasses of the star expelled into space [ http://www.seds.org/messier/planetar.html ] appear from our vantage point as if we are looking down a helix [ http://mathworld.wolfram.com/Helix.html ]. The remnant central stellar core, destined to become a white dwarf star [ http://imagine.gsfc.nasa.gov/docs/science/know_l2/dwarfs.html ], glows in light so energetic [ http://snoopy.gsfc.nasa.gov/~orfeus2/ultraviolet.html ] it causes the previously expelled gas to fluoresce [ http://www.exploratorium.edu/xref/exhibits/fluorescent_tube.html ]. The Helix Nebula [ http://www-personal.umich.edu/~jstys/nebulae/ngc7293.html ], given a technical designation of NGC 7293 [ http://www.seds.org/messier/xtra/ngc/n7293.html ], lies 450 light-years [ http://chandra.harvard.edu/photo/cosmic_distance.html ] away towards the constellation [ http://www.emufarm.org/~cmbell/myth/myth.html ] of Aquarius [ http://www.astronomical.org/constellations/aqr.html ] and spans 1.5 light-years. The above image was taken with the Canada-France-Hawaii Telescope [ http://www.cfht.hawaii.edu/ ] (CFHT) located atop a dormant volcano in Hawaii [ http://www.state.hi.us/ ], USA. A close-up of the inner edge [ http://antwrp.gsfc.nasa.gov/apod/ap970720.html ] of the Helix Nebula [ http://antwrp.gsfc.nasa.gov/apod/ap970901.html ] shows unusual gas knots of unknown origin [ http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1998ApJ...503..792B ]. |
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NASA's Aquarius/SAC-D Missio
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nasa, nasaheadquartersflickr
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Eric Lindstrom, left, Aquari
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2011-05-17 |
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NASA |
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5730756011_eaf6757e2a_o |
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NASA's Aquarius/SAC-D Missio
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nasa, nasaheadquartersflickr
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Gary Lagerloef, Aquarius Pri
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| date |
2011-05-17 |
| creator |
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5731306842_763318ecd5_o |
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NASA's Aquarius/SAC-D Missio
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nasa, nasaheadquartersflickr
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Gary Lagerloef, left, Aquari
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2011-05-17 |
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NASA's Aquarius/SAC-D Missio
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nasa, nasaheadquartersflickr
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Amit Sen, Aquarius Project M
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2011-05-17 |
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NASA's Aquarius/SAC-D Missio
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nasa, nasaheadquartersflickr
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Gary Lagerloef, right, Aquar
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2011-05-17 |
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NASA's Aquarius/SAC-D Missio
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nasa, nasaheadquartersflickr
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Seated from left, Eric Linds
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2011-05-17 |
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NASA's Aquarius/SAC-D Missio
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nasa, nasaheadquartersflickr
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A reporter asks a question t
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NASA's Aquarius/SAC-D Missio
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nasa, nasaheadquartersflickr
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Eric Ianson, Aquarius Progra
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2011-05-17 |
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NASA's Aquarius/SAC-D Missio
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nasa, nasaheadquartersflickr
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Eric Lindstrom, left, Aquari
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2011-05-17 |
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NASA's Aquarius/SAC-D Missio
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nasa, nasaheadquartersflickr
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Amit Sen, center, Aquarius P
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| creator |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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| General Description |
Behind the Scenes : TRAINING Imagery |
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