Double moon halo

A 22-degree lunar halo, with a 9-degree lunar halo inside it.

Super Blue Moon eclipse on January 31

The super Blue Moon happens before sunrise on January 31, 2018, for North America and Hawaii. It happens after sunset on January 31 for the Middle East, Asia, Indonesia, Australia and New Zealand. Details here.

These clouds are called ship tracks

Ship tracks typically form among low-lying stratus and cumulus clouds. They form around exhaust particles released by ships.

Moon near Castor and Pollux January 29

Castor and Pollux - brightest stars in the constellation Gemini the Twins - are noticeable for being bright and close together on the sky's dome.

Research shows black holes push away their dinners

“Winds must blow away a large fraction of the matter a black hole could eat," researchers said.

Will future landers on Europa sink?

Jupiter's moon Europa is an ocean world beneath an icy crust, and scientists want to land a spacecraft there. But a new study indicates a surface less dense than freshly fallen snow.

Watch 2nd spacewalk of 2018 live on Monday

Watch on January 29, as two astronauts aboard the International Space Station (ISS) perform the year’s 2nd spacewalk. Live TV coverage starts at 10:30 UTC (5:30 a.m. EST). The spacewalk begins at about 12:10 UTC (7:10 a.m. EST).

Swollen Seine causing Paris floods

Eastern France experienced unusually heavy rainfall throughout January 2018, and last week the Seine, in Paris, began a precipitous rise. Videos here.

Scientists find oldest modern human fossil outside Africa

This fossil suggests Homo sapiens left Africa 50,000 years earlier than previously thought.

ISS over Idaho’s Wood River Valley

On a cold January night, Nils Ribi captured the path of the International Space Station (ISS) in the southern sky over the Wood River Valley of Idaho.