Geology
Earth is Hiding Another Planet Deep Inside
Earth's early history is marked by massive collisions with other objects, including planetesimals. One of the defining events in our…
A Collapsed Martian Lava Chamber, Seen From Space
Lava tubes and chambers attract a lot of attention as potential sites for bases on the Moon and Mars. They…
Is This a Collapsed Lava Tube on the Moon?
NASA's Lunar Reconnaissance Orbiter (LRO) captured fascinating images of a feature on the Moon that could be a collapsed lava…
Every Night and Every Morning, the Moon Rumbles With Tiny Quakes
A new study from Caltech shows that the moon experiences "moonquakes" with precise regularity, like a "lunar alarm clock."
Did Life Need Plate Tectonics to Emerge?
It's widely accepted that Earth's plate tectonics are a key factor in life's emergence. Plate tectonics allows heat to move…
The Moon has a Solid Core Like the Earth
A new study by a team of French researchers has confirmed that the Moon has a solid inner core.
Not Snowball Earth, More of a Slushball Earth
Our planet hasn't always been the warm, inviting place we know today. At least five times in its history, Earth…
The First Radiation Map of the Skies Over Africa
Astronomers have developed a way to cheaply and easily measure the radiation exposure experienced by airline crews over Africa. (more…)
The Earth has an Even More Inner Core, and it's a Ball of Solid Metal
Based on seismic data from about 200 earthquakes in the past decade, a team of Australian scientists found evidence of…
How are Mars Rocks Getting “Shocked” by Meteorite Impacts?
A new NASA study shows how samples obtained by Perseverance could have been shaped by asteroid impacts when Mars was…