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Rainbow Airglow over the Azores
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The Hydrogen Clouds of M33
Gorgeous spiral galaxy M33 seems to have more than its fair share of glowing hydrogen gas.
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The Tulip in the Swan
Framing a bright emission region, this telescopic view looks out across a pretty field of stars along the plane of our Milky Way Galaxy.
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IC 1805: The Heart Nebula
What energizes the Heart Nebula?
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Pluto in True Color
What color is Pluto, really? It took some effort to figure out.
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In Wolf's Cave
The mysterious blue reflection nebula found in catalogs as VdB 152 or Ced 201 really is very faint.
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M27: Not a Comet
While hunting for comets in the skies above 18th century France, astronomer Charles Messier diligently kept a list of the things he encountered that were definitely not comets.
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Dark Dust and Colorful Clouds near Antares
Why is the sky near Antares and Rho Ophiuchi so dusty yet colorful?
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The Ghost of Jupiter's Halo
Close-up images of NGC 3242 show the cast off shroud of a dying, sun-like star fancifully known as The Ghost of Jupiter nebula.
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Carina Nebula Panorama from Hubble
How do violent stars affect their surroundings?
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