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Eleanor Imster

Watch 1st spacewalk of 2018 on Tuesday

2018’s 1st spacewalk is apparently on! Live coverage has begun on NASA TV. A pair of NASA astronauts is scheduled to perform the January 23 spacewalk.

Jupiter’s swirling south pole

Juno spacecraft view of planet Jupiter’s southern polar region.

Winter blues

Sunset on Copt Hill, Sunderland, UK. Gary Pescod took this photo on January 18, 2018.

A new day from space

Sunrise from the International Space Station. The ISS crew sees a sunrise every 90 minutes.

Meteor lit up Michigan night skies

A brilliant fireball lit up skies in the U.S. state of Michigan Tuesday night and caused the equivalent of a magnitude 2.0 earthquake.

Drone recon finds ancient Silk Road irrigation system

Scientists used drones to map a previously-unknown, 1,600-year-old irrigation system that allowed farming in arid northwest China, one of world’s driest climates.

Sirius rising over Lake Huron

The bright star Sirius rising over Lake Huron in Michigan.

Best photos: Snowflakes

A lot of us have been cold and “snow-verwhelmed” recently, but – although we might be getting tired of snow – we’re never tired of snowflake pics from EarthSky friends!

Winter light

Early January, over the Bothnian Sea in Sweden.

Largest known prime number discovered

The new prime number, discovered by a collaborative computer project, is nearly one million digits larger than the previous record prime number.