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  This artist's illustration shows the motion of three of the outermost planets in the HR 8799 system as measured over a 10-year period from Hubble Space Telescope archival data and more recent ground-based telescopic data
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  Immune cells in the brain chew up memories, a new study in mice shows.
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  This NASA/ESA Hubble Space Telescope image of the cluster Westerlund 2 and its surroundings has been released to celebrate Hubble's 25th year in orbit and a quarter of a century of new discoveries
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  The barred spiral galaxy NGC 1672, showing up clusters of hot young blue stars along its spiral arms, and clouds of hydrogen gas glowing in red
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  This ground-based photo shows a wide angle view of the constellation Corvus and part of contellation Hydra. The Antennae galaxies is located in the southern constellation of Corvus.
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  Detailed images of the nearby star Beta Pictoris, taken by NASA