The moon is thought to have formed about 4.5 billion years ago, likely resulting from a massive collision between Earth and a Mars-sized object called Theia. Although Earth only has one true ...

This is the period during which many scientists believe the young Earth collided with another nascent planet called Theia ... and cold gas—resides in the asteroid belt between Mars and Jupiter ...

According to this theory, about 4.5 billion years ago, a Mars-sized planetary body called Theia collided with the proto-Earth ... More dramatically, a close encounter with a large asteroid or another ...

According to this theory, about 4.5 billion years ago, a Mars-sized planetary body called Theia collided with the proto-Earth ... More dramatically, a close encounter with a large asteroid or another ...

These articles describe the ways asteroid sample return missions generate new scientific insights at every stage – from the collection process, to the container’s return to Earth, to ...

A stadium-sized asteroid will pass by Earth on Friday, May 9. And if you're interested, you could see it happen in real time, thanks to a livestream from The Virtual Telescope Project. Known as ...

NASA's Lucy spacecraft has beamed back pictures from its latest asteroid flyby, revealing a long, lumpy, odd-shaped space rock.The space agency released the images Monday, a day after the close ...

HELSINKI — China is set to launch its second Tianwen deep space exploration mission late May, targeting both a near Earth asteroid and a main belt comet. The Tianwen-2 spacecraft is now being ...

In January 2025 NASA made an important announcement. An asteroid had just been detected by a telescope in Chile, passing by at just twice as far from Earth as the moon. And based on available ...