Check out this sweeping vista on the planet Mars, taken by the Curiosity rover from a mountainside ridge. It provides a look back at key sites visited by the rover since its 2012 landing.

Eleanor Imster

February 1, 2018

Close-up on a giant star

Astronomers have created the first-ever detailed image of the surface of a giant star, about 530 light-years away and 350 times larger than our sun.

Eleanor Imster

January 30, 2018

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).

Eleanor Imster

January 28, 2018

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.

Eleanor Imster

January 27, 2018

Ingredients for life in space rocks that fell to Earth

Two rocks that crashed to Earth from space in 1998 are the 1st meteorites found to contain both liquid water and a mix of complex organic compounds such as hydrocarbons and amino acids.

Eleanor Imster

January 26, 2018

Analysis reveals tiny dino with rainbow feathers

This bird-like dinosaur lived in China about 161 million years ago. Scientists think it might have used its rainbow ruff to dazzle potential mates.

Eleanor Imster

January 26, 2018

Cartwheel Galaxy

Hubble Space Telescope image of a rare ring galaxy in the direction of the constellation Sculptor.

Eleanor Imster

January 26, 2018

Eleanor Imster

Eleanor Imster has helped write and edit EarthSky since 1995. She was an integral part of the award-winning EarthSky radio series almost since it began until it ended in 2013. She and her husband live in Tennessee, where they enjoy guitar playing and singing. They have 2 grown sons.