Asteroids

Astronomers Have Discovered a 2-km Asteroid Orbiting Closer to the Sun than Venus

Astronomers have painstakingly built models of the asteroid population, and those models predict that there will be ~1 km sized…

1 week ago

Bennu is Constantly Getting Sandblasted by Tiny Meteoroids

As soon as the OSIRIS-REx spacecraft arrived at asteroid Bennu in December 2018, there was a big surprise. Scientists expected…

2 weeks ago

There are Three Asteroids Hiding in this Animation, See If You Can Find Them

This summer, the European Space Agency’s Near-Earth Object Coordination Centre (NEOCC) started posting “riddles” or challenges on their website. These…

2 weeks ago

Completely Harmless Asteroid Almost Certainly Won’t Hit Earth Just Before the US Election

In a year of devastating wildfires, destructive derechos, early and active hurricanes, widespread social unrest, contentious politics and more --…

1 month ago

Ancient Meteorites Can be Found Embedded in Rocks, Like Fossils

Comets visit the inner Solar System, and leave without saying goodbye. Maybe they leave a trail of dust behind, and…

2 months ago

800 Million Years Ago, it Was Raining Asteroids on the Earth and Moon

Natural processes here on Earth continually re-shape the planet's surface. Craters from ancient asteroid strikes are erased in a short…

2 months ago

Organic Matter Could Have Delivered Earth’s Water

The origin of Earth's water is a big piece of the puzzle in Earth's history. Did it come from comets…

2 months ago

That’s So Metal. NASA’s Psyche Mission is Now Under Construction

In August of 2022, NASA will send a robotic spacecraft to the Main Asteroid Belt to explore a truly unique…

3 months ago

Rocks on Bennu are Cracking Because of the Constant Day/Night Cycling

Asteroid Bennu is blanketed by rocks and huge boulders. And now that the OSIRIS-REx spacecraft is taking a close look…

4 months ago

Astronomers Finally Think They Understand Where Interstellar Object Oumuamua Came From and How it Formed

'Oumuamua caused quite a stir when it visited our Solar System in 2017. It didn't stay long, however, and when…

5 months ago