Asteroids

OSIRIS-Rex got to Know Bennu Really Well. Apparently, There’s now a 1-in-1,750 Chance That it’ll hit Earth by 2300

Asteroid Bennu is one of the two most hazardous known asteroids in our Solar System. Luckily, the OSIRIS-REx (Origins, Spectral…

4 months ago

Did Asteroid Impacts Provide Both the Heat and Raw Ingredients to Enable Life?

This is our Great Question: How did life begin on Earth? Anyone who says they have the answer is telling…

6 months ago

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…

8 months 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…

8 months 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…

8 months 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…

9 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.…

9 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.…

9 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…

10 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…

11 months ago