Rosetta’s comet sculpted by stress

The Rosetta space mission revealed a comet as 2 icy balls apparently stuck together billions of years ago. Now scientists say the comet's double-lobed structure guided its evolution.

IAU names Chang’e-4 landing site on moon’s far side

The Chinese spacecraft Chang’e-4 made history earlier this year, when it became the first earthly spacecraft to land on the moon's far side. Now astronomers have named its landing site.

Earth’s atmosphere extends beyond moon

In fact, these researchers said, the moon flies through Earth's outermost atmosphere, called its geocorona.

Where is the universe’s missing matter?

When astronomers add up the mass of all the normal matter in the present-day universe, about a third of it can't be found. Where is it?

A solar flare 10 billion times more powerful than sun’s

Our sun's solar flares are an incredible natural phenomenon, but now astronomers have observed a flare on a young star that almost defies belief. It's 10 billion times more powerful than any seen on our sun!

Volcanic activity under Mars’s surface?

Mars has long been thought to be a geologically dead world. Could there still be volcanic activity beneath its surface? A subsurface lake at Mars' south pole suggests that possibility.

From Chelyabinsk to Cuba: The meteor connection

The scientific team that used YouTube videos to determine the trajectory of the Chelyabinsk meteor used the same method to track the trajectory of the bright meteor that crossed the sky over Cuba on February 1.

5 things about radiation donuts, in 2 minutes

Did you know that our planet has radiation donuts? These giant, donut-shaped clouds of radiation are called the Van Allen Belts.

Mars Opportunity rover ends its mission

The Mars Opportunity rover, built to last 90 days, has ended its mission after 15 years on the red planet.

New Hubble images show storms on Uranus and Neptune

Uranus and Neptune - the ice giants of the solar system - are distant worlds last visited by the Voyager 2 spacecraft in the late 1980s. But the Hubble Space Telescope is still keeping an eye on them and their dynamic atmospheres.