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This artist’s conception illustrates one of the most primitive supermassive black holes known (central black dot) at the core of a young, star-rich galaxy. Astronomers using NASA’s Spitzer Space Telescope have uncovered two of these early objects, dating back to about 13 billion years ago. The monstrous black holes are among the most distant known, and appear to be in the very earliest stages of formation, earlier than any observed so far. Credit: NASA/JPL-Caltech.

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Credit: Tim Doucette.

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This 2016 Curiosity rover selfie shows the vehicle at the “Okoruso” drilling site on Mount Sharp’s Naukluft Plateau. The Martian scene is a mosaic of images taken with the arm-mounted Mars Hands Lens Imager (MAHLI). Credit: NASA/JPL-Caltech/MSSS. Credit: NASA/JPL-Caltech/MSSS.

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The cosmic angelfish

Chris Schur, taken from Happy Jack, Arizona

Sharpless 2-264 is a nebula with emission and a molecular cloud surrounding the star Lambda Orionis. Its nickname, the Angelfish Nebula, is due to its profile in shorter exposures, though it appears rounder in this deeper exposure. The imager used a 135mm f/2 lens and monochrome camera with a dual-band Hα/OIII filter and RGB filters, taking 2 hours of exposure.