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$5-billion asteroid Nereus flies by December 11
Asteroid Nereus will pass Earth at about 10 lunar distances on December 11, 2021. Scientists will study it. Its potential value is $5 billion in precious metals.
December 10, 2021
‘Mystery hut’ on the far side of the moon
China's Yutu 2 rover in the Von Kármán crater on the far side of the moon has spotted a roughly cube-shaped object on the horizon. What is Yutu 2's 'mystery hut'?
December 10, 2021
Is the Oregon earthquake swarm tapering off?
The USGS Latest Earthquakes page is displaying more than 40 small-to-moderate earthquakes on December 7 and 8, 2021, off the coast of Oregon.
December 9, 2021
Moon, Jupiter, Saturn, Venus December 6 to December 9
Wow! What a sight. The moon, Jupiter, Saturn, Venus all in your western sky after sunset. Watch for them December 6 to 9, 2021.
December 8, 2021
Asteroid impact monitoring system goes live
The asteroid impact monitoring system Sentry-II is analyzing near-Earth asteroids to look for ones that could intersect with Earth's orbit.
December 7, 2021
Photos: This week’s moon and planets after sunset!
Favorite photos - planets and moon - from the EarthSky community during the week of December 6 to 9, 2021. What a beautiful alignment of worlds!
December 7, 2021
Arecibo data live on, provide new galaxy insights
Despite the collapse of the Arecibo radio telescope in 2020, astronomers are still using Arecibo data to make new insights into our universe.
December 5, 2021
False fossils on Mars might inhibit search for life
A new study from scientists in the UK says that false fossils on Mars could complicate the search for microbial life. They could be mistaken for real fossils.
December 5, 2021
Photos and video: December 4 total solar eclipse
Photos and video, December 4, 2021, total solar eclipse. It was visible along a narrow path - the path of totality - that crossed Antarctica.
December 4, 2021
Horologium the Pendulum Clock, best in December
Horologium the Pendulum Clock is a constellation that lies in southern skies. Observers can best spot this constellation around the month of December.
December 3, 2021
