2018’s closest far moon on April 8

The last quarter moon you'll see late tonight is aligned with 2018's closest apogee, that is, the closest of the moon's farthest points in its monthly orbit. And that's no surprise ...

Astronomers find 72 bright and fast explosions

There and gone in a cosmological flash. Astronomers report on 72 bright, quick events found in a recent survey. They're like supernovae, but flash into view, then disappear again much faster.

Top 10 things about brown recluse spiders

It's their active season. Here are some things you might not know.

Earth’s magnetosphere envelops and protects us

A giant bubble of magnetism protects us from the sun's fury. Take 3 minutes to learn about it, in this new NASA ScienceCast video.

This weekend, moon near Mars and Saturn

These 3 worlds - the moon, Mars and Saturn - will climb over your horizon very late at night this weekend. You can see all 3 together before dawn Saturday and Sunday.

Sahara Desert is expanding

A new study finds that the world’s largest desert has grown by 10 percent since 1920.

Hand of the Desert at night

Artist Mario Irarrázabal created the Hand of the Desert after the city of Antofagasta, Chile, asked him for something notable, to fill the empty space of the Atacama Desert. Astrophotographer Yuri Beletsky captured it at night.

See it! Moon sweeps past Jupiter

Have you been watching the moon's sweep past Jupiter this week? From the time they rise in mid- to late evening until dawn, they're still the brightest things up there.

Does space weather threaten high-tech life?

The wired Earth of the 21st century is at the mercy of the volatile nature of the sun, says a scientist who studies solar storms.

Antarctic ice grounding lines are shifting

Europe's CryoSat satellite was used - over 7 years - to track 10,000 miles (16,000 km) of Antarctic coastline. It can be seen warm ocean water is eating away at Antarctica's floating margins.