Asteroids

Earth Gains 5,200 Tons of Dust From Space Every Year

Whenever I wipe the dust off my coffee table or catch a glimpse of dust motes floating in sunlight, my…

3 weeks ago

OSIRIS-REx Did One Last Close Flyby of Asteroid Bennu. It’s Almost Time to Come Home

After more than two years in orbit around asteroid Bennu, NASA's OSIRIS-REx spacecraft is ready to come home. It's bringing…

3 weeks ago

Careful Calculations Show That Earth is Safe From Asteroid Apophis for at Least 100 Years

If you're looking for doomsday, you can forget about asteroid Apophis. The latest radar observations have effectively ruled out any…

1 month ago

It Turns Out That the World’s Oldest Impact Crater Isn’t an Impact Crater

In early 2012, an international research team surveying parts of southwestern Greenland announced that they had discovered the oldest impact…

2 months ago

Dust in the Chixalub Crater Makes the Compelling Case That an Asteroid Wiped out the Dinosaurs 65 Million Years ago

For decades scientists have believed that an asteroid impact event ended the era of the dinosaurs 66 million years ago.…

2 months ago

Jupiter has Added a Comet to its Trojan Collection

Jupiter is notorious for capturing objects that venture too close to the gas giant and its enormous pull of gravity.…

2 months ago

OSIRIS-REx is Heading for Home in May

The OSIRIS-REx team decided to delay the spacecraft’s departure from asteroid Bennu for two months. The departure window opens in…

3 months ago

Asteroids Crashing Into Dead Stars are Helping Explain Where the Universe’s Missing Lithium Went

What happened to all the lithium? The question has stumped astronomers for decades. While cosmologists have successfully predicted the abundance…

4 months ago

Japan’s Hayabusa 2 Probe Drops Off Bits of an Asteroid and Heads for Its Next Target

Japan's Hayabusa 2 probe zoomed past Earth on December 5th and dropped off a capsule containing bits of an asteroid,…

5 months ago

There Might Be Water On All Rocky Planets

If you asked someone who was reasonably scientifically literate how Earth got its water, they'd likely tell you it came…

6 months ago