See the mysterious spiral over Hawaii observatory

Astronomers using the Subaru-Asahi Star Camera in Mauna Kea, Hawaii, captured a mysterious spiral in the night sky. Watch the video here.

China’s Lunar New Year exodus cools major cities

A study found that when businesses close for a week and people travel to rural areas for the Lunar New Year, temperatures in large Chinese cities drop.

The 5 impact craters on Earth that highlight our wild past

We highlight 5 impact craters on Earth that give scientists insight into our planet's wild and violent history. See the 5 impacts here.

Freezing rain: All about this dangerous ice

What causes the dangerous winter weather - freezing rain - that can down power lines, paralyze cities, bring down trees and cause serious accidents?

On Saturday … Closest new moon in 1,337 years

The new moon of January 21, 2023 will be the closest new moon to Earth in a period of 1,337 years. Read more about the closest new moon here.

Too cold to snow? Is that possible?

Can it ever be too cold to snow? The fact is, no matter how cold a snow-producing cloud is, if it has a source of water, it can build big snowflakes.

NASA says 2022 5th-warmest year on record

NASA scientists say 2022 5th-warmest year since 1880. And the last 9 consecutive years have been the warmest 9 on record.

Antarctic sea ice in rapid decline this season

Recent images acquired via satellite on clear days in Antarctica. Antarctic sea ice decline in the 2022-2023 season has been the lowest in 45 years.

Lenticular clouds look like UFOs

Lenticular clouds look like UFOs. See photos of lenticular clouds in various parts of the world, from the EarthSky community.

Many mammals headed for extinction, study says

A new study focuses on mammals headed for extinction. It shows that human activities push animals into poor-quality environments, where they often do poorly.