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Help name 5 new moons of Jupiter
You can help astronomers select names for 5 newly discovered moons of the planet Jupiter. Look here for contest details and how to enter.
February 25, 2019
Astronomers find a nearby river of stars
Researchers used Gaia data to find a stellar stream of at least 4,000 stars that have been moving together in space since they formed, about a billion years ago.
February 24, 2019
Weird hexagonal dune field seen on Mars
Mars has sand dunes, as Earth does. But now, NASA's Odyssey orbiter has revealed something odd: a large dune field shaped roughly like a hexagon. The finding is expected to provide more clues as to how dunes form in Martian winds.
February 22, 2019
Japan’s Hayabusa2 lands on asteroid Ryugu
The Hayabusa2 spacecraft touched down briefly and successfully on asteroid Ryugu, 200 million miles (300 million km) from Earth. It successfully fired a bullet into the asteroid to puff up dust for sample collection.
February 22, 2019
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.
February 22, 2019
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.
February 22, 2019
Earth’s atmosphere extends beyond moon
In fact, these researchers said, the moon flies through Earth's outermost atmosphere, called its geocorona.
February 21, 2019
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?
February 20, 2019
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!
February 19, 2019
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.
February 17, 2019
