Asteroids

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…

3 days ago

Extrasolar Object Interceptor Would be Able to Chase Down the Next Oumuamua or Borisov and Actually Return a Sample

What if we had the ability to chase down interstellar objects passing through our Solar System, like Oumuamua or Comet…

1 month ago

If you Want to Move an Asteroid, you Need the Right Kind of Nuclear Explosion

A new collaborative study has shown that nuclear explosions could be used to deflect asteroids, protecting Earth from cataclysmic impacts.

2 months ago

100-meter Asteroid Created a Strange Impact Event in Antarctica 430,000 Years Ago

The effects of ancient asteroid impacts on Earth are still evident from the variety of impact craters across our planet.…

2 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…

2 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…

2 months ago

Primordial Asteroids That Never Suffered Massive Collisions all Seem to be Larger Than 100 km. Why?

The early asteroids had a similar size, and this could be due to turbulence in the early solar system.

2 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…

3 months ago

Organic Material Found on an Asteroid Sample Returned by Hayabusa 1

Panspermia is an idea that has been around for a long time.  It was first mentioned in the 5th century…

3 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.…

3 months ago