Debris falling from the sky: More often, more risk
It is still not clear what exactly fell onto a Kenyan village last month, but such events are likely to become increasingly ...
Knowridge9h
The lunar surface remelted, obscuring an easy answer to its true age
How old is the Moon? Astronaut-gathered samples from the lunar surface put its age at about 4.35 billion years. However, ...
PBS25d
The Geminids are one of the strongest meteor showers of the year. Here’s how to watch
The glowing pockets of air around fast-moving space rocks, ranging from the size of a dust particle to a boulder, may be visible in the night sky. The rocky nature of asteroid debris makes the ...