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Nyx Blackthorn posted
Stereo HeleneGet out your red/blue glasses and float next to Helene, small, icy moon of Saturn. Appropriately named, Helene is a Trojan moon, so called because it orbits at a Lagrange point. A Lagrange point is a gravitationally stable position near two massive bodies, in this case Saturn and larger moon Dione. In fact, irregularly shaped ( about…Read More
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Emberly Ghostwalker posted
Lunar Dust and Duct TapeWhy is the Moon so dusty? On Earth, rocks are weathered by wind and water, creating soil and sand. On the Moon, eons of constant micrometeorite bombardment have blasted away at the rocky surface creating a layer of powdery lunar soil or regolith. For the Apollo astronauts and their equipment, the pervasive, fine, gritty…Read More
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Edward Green posted
Messier 81One of the brightest galaxies in planet Earth’s sky is similar in size to our Milky Way Galaxy: big, beautiful Messier 81. Also known as NGC 3031 or Bode’s galaxy for its 18th century discoverer, this grand spiral can be found toward the northern constellation of Ursa Major, the Great Bear. The sharp, detailed telescopic view reveals…Read More
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Zeke Crystalblade posted
Star Formation in the Pacman NebulaYou’d think the Pacman Nebula would be eating stars, but actually it is forming them. Within the nebula, a cluster’s young, massive stars are powering the pervasive nebular glow. The eye-catching shapes looming in the featured portrait of NGC 281 are sculpted dusty columns and dense Bok globules seen in…Read More
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Joseph Johnson posted
A Blue Banded Blood MoonWhat causes a blue band to cross the Moon during a lunar eclipse? The blue band is real but usually quite hard to see. The featured HDR image of last week’s lunar eclipse, however — taken from Norman, Oklahoma (USA) — has been digitally processed to exaggerate the colors. The gray color on the upper right of the top…Read More
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