
The perfectly picturesque spiral galaxy known as Messier 81, or M81, looks sharp in this composite from NASA's Spitzer and Hubble Space Telescopes and NASA's Galaxy Evolution Explorer. via NASA https://ift.tt/RZsBXdH
During its close flyby of Jupiter’s moon Io on December 30, 2023, NASA’s Juno spacecraft captured some of the most detailed imagery ever of...
 
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