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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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April 2026

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A mysterious rose

Luigi La Bella from Melilli, Italy

Sharpless 2–174, also known as the Rose of Valentine, is a faint emission nebula about 1,400 light-years away in the constellation Cepheus. It was first thought to be a planetary nebula abandoned by its once-central white dwarf, GD 561 (just below the bright star near the object’s pronounced blue edge). But it may also be an unrelated cloud of ambient interstellar material ionized by GD 561. This image combines 27 hours of HOO exposure using a 5-inch f/7 refractor and a one-shot-color camera.