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Planets and what their atmospheres contain

Planets and what their atmospheres contain

F-22 Raptor bay doors open...

F-22 Raptor bay doors open...

Spider webs

Spider webs

How to Identify Rocks by  Bill Langer, U.S. Geological Survey

How to Identify Rocks by Bill Langer, U.S. Geological Survey

How to Identify Rocks by  Bill Langer, U.S. Geological Survey

How to Identify Rocks by Bill Langer, U.S. Geological Survey

NGC 2207 and IC 2163 are a pair of colliding spiral galaxies about 80 million light-years away in the constellation Canis Major. Both galaxies were discovered by John Herschel in 1835. So far three supernovae have been observed in #NGC2207

NGC 2207 and IC 2163 are a pair of colliding spiral galaxies about 80 million light-years away in the constellation Canis Major. Both galaxies were discovered by John Herschel in 1835. So far three supernovae have been observed in #NGC2207

Ultima

Ultima