geology
A Huge Ring-Like Structure on Ganymede Might be the Result of an Enormous Impact
Ganymede's surface is a bit of a puzzle for planetary scientists. About two-thirds of its surface is covered in lighter…
Deep Down in Ocean Worlds, it’s Difficult to Tell Where the Oceans End and the Rock Begins
We all know what water is. And what rock is. The difference is crystal clear. Well, here on Earth it…
Do We Now Understand Why the Moon’s Near and Far Sides Look So Dramatically Different?
The Moon is easily the most well-studied object in the Solar System, (other than Earth, of course.) But it still…
The dinosaur killing asteroid hit the Earth at the most devastating possible angle
There are bad days, and then there are really bad days. 65 million years ago, life on Earth - especially…
Want to Mine the Moon? Here’s a Detailed Map of all its Minerals
The USGS' Astrogeology Science Center has released a complete mineral map of the Moon, which the lunar mining crowd is…
3 Billion Years Ago, the World Might Have Been a Waterworld, With No Continents At All
Evidence from an ancient section of the Earth's crust suggest that Earth was once a water-world, some three billion years…
A Distant Asteroid Collision Gave Earthly Biodiversity An Ancient Boost
About 466 million years ago, there was an asteroid collision in the asteroid belt between Mars and Jupiter. The collision…
The Moon is Older Than Scientists Thought
The most comprehensive and widely-held theory of how the Moon formed is called the 'giant impact hypothesis.' That hypothesis shows…
Astronomy Cast Ep. 522: Judging Age & Origins, part 1 – Earth Rocks
People always want to know how old everything is. And more specifically, they want to know how we know how…
Strange Landscapes on Mars were Created by Explosive Volcanoes
According to a new study from Johns Hopkins University, Mars' Medusa Fossae region was created by volcanic activity, a finding…