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Astronomy Essentials
Large comet C/2017 K2 to pass Earth in July 2022
Comet C/2017 K2 (PanSTARRS) will brighten in our skies this summer. You can watch it with a small telescope for 4 months.
January 20, 2022
Today's Image
Rolling stones on Mars, seen from orbit
Rolling stones on Mars. An image from the ESA/Roscosmos ExoMars Trace Gas Orbiter shows a cliff-face on Mars. Boulders have rolled down the cliff.
January 20, 2022
Space
Watch 2022’s 1st spacewalk on January 19
On Wednesday, two Russian cosmonauts will venture outside the International Space Station to kick off 2022's 1st spacewalk. Here's how to watch it live.
January 19, 2022
Space
Photos and video of huge asteroid 1994 PC1. It passed Earth safely January 18
Huge asteroid - Asteroid 1994 PC1 - safely passed Earth on January 18, 2022. At its closest, it was 5 times farther than the moon. Video and photos here.
January 19, 2022
Brightest Stars
Blue-white Rigel is Orion’s brightest star
Blue-white Rigel shines as the brightest star in the constellation Orion the Hunter. It's a hot massive star in the latter stages of its stellar evolution.
January 19, 2022
Tonight
Orion the Hunter is easy to spot in January
Orion the Hunter is one of the easiest constellations to identify thanks to its Belt, the 3 medium-bright stars in a short, straight row at his waist.
January 18, 2022
Space
A gravitational wave background from giant black holes?
In its second data release in early January 2022, scientists with IPTA announced early glimpses of a gravitational wave background.
January 17, 2022
Constellations
Dorado and Mensa house the Large Magellanic Cloud
The constellations Mensa and Dorado are deep in southern skies. Between them, stretching across the border, lies the Large Magellanic Cloud.
January 17, 2022
Tonight
January’s full moon: Wolf Moon and 1st full moon of 2022
January's full moon is on January 17, 2022, and is nicknamed the Wolf Moon. Enjoy the full-looking moon for a night or two on either side of that night.
January 17, 2022
Earth
Australia ties its hottest temperature on record
Onslow, Australia, reached 50.7 C on January 13, 2022, tying its hottest temperature on record in the country and for the Southern Hemisphere.
January 16, 2022
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