Geology
Earth May Have Lost Some Primoridial Atmosphere to Meteors
During the Hadean Eon, some 4.5 billion years ago, the world was a much different place than it is today.…
Observing Challenge: How to See Asteroid Hebe, Mother of Mucho Meteorites
In the reeds that line the banks of the celestial river Eridanus, you'll find Hebe on the prowl this month. Discovered in 1847…
Questioning the Impact Theory: What Really Killed the Dinosaurs?
About sixty five and a half million years ago, the Earth suffered its largest known cosmic impact. An asteroid or…
Were Lunar Volcanoes Active When Dinosaurs Roamed the Earth?
The Moon's a very dusty museum where the exhibits haven't changed much over the last 4 billion years. Or so…
Moon-Forming Crash Left A ‘Signal’ In Planet Earth
What physical evidence exists of a huge collision that formed our Moon and nearly blew the Earth apart, about 4.5…
How Life Could Have Produced Most Minerals On Earth
While astronomers are trying to figure out which planets they find are habitable, there are a range of things to…
Volcanic Blast Forms New Island Near Japan
A volcanic eruption is creating a tiny new island off the coast of Japan. The Japanese Coast Guard snapped images…
Why Is This Astronaut Working Survivor-Style In The Arctic?
This week, Canadian astronaut Jeremy Hansen is on his way to a remote island in the Canadian Arctic. We realize…
How Old Is The Earth?
This article comes from the Universe Today archive, but was updated with this spiffy video. How old is the Earth?…
Meet GROVER the Rover, Set For Greenland Exploration
How fast is Greenland's ice sheet melting in response to climate change, and how is it recovering? A new NASA…