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Heads up! Small asteroid to pass very close on April 12
Small asteroid 2021 GW4 will pass extremely close to Earth on Monday, April 12, 2021. It'll pass just 12,313 miles (19,816 km) from Earth's surface, or about 5% the Earth-moon distance.
April 11, 2021
Hubble spots double quasars in merging galaxies
New images of the oldest known pairs of quasars, farthest and oldest yet seen, show that their home galaxies are colliding.
April 11, 2021
Star-hop to the Coma star cluster
Long ago, the Coma star cluster represented the Lion's tufted tail. Today, we know it as an open star cluster, whose stars were born together and are still loosely bound by gravity.
April 10, 2021
Egyptologists unearth a 3,000-year-old ‘lost golden city’
The long-sought "lost golden city" of Aten has been found near Luxor, Egypt, in the Valley of Kings. "The mission expects to uncover untouched tombs filled with treasures," the scientists said.
April 9, 2021
Leo loses his tail. We gain a constellation
The constellation Leo once had a tail, a clump of faint stars. Now these same stars are known as Coma Berenices, the hair of a queen.
April 9, 2021
The closest extragalactic fast radio burst yet?
Astronomers detected a new, nearby, repeating fast radio burst, originating from a spot near the great spiral galaxy M81.
April 8, 2021
100 days of sunspots
A blend of a total of 100 images showing every sunspot that appeared on the sun from December 25, 2020, to April 3, 2021.
April 8, 2021
Guatemala’s Pacaya volcano still erupting
The Pacaya volcano in Guatemala is still erupting, spewing rivers of lava and ash clouds. See photos, video, and satellite images.
April 7, 2021
Juno finds a new auroral feature on Jupiter
NASA's Juno spacecraft - whose mission in orbit around Jupiter was recently extended to 2025 - has been used to discover a rapidly expanding auroral ring at the very fringes of the Jovian magnetosphere.
April 7, 2021
