Late Heavy Bombardment
Did Some of Earth’s Water Come from the Solar Wind?
The source of Earth's water is an enduring mystery that extends to exoplanets and the notion of habitability. In broad…
How Oumuamua Changes Our Perspective on Galactic Panspermia
Panspermia is an innately attractive idea that's gained prominence in recent decades. Yet, among working scientists, it gets little attention.…
The Giant Planets Migrated Between 60-100 Million Years After the Solar System Formed
Untangling what happened in our Solar System tens or hundreds of millions of years ago is challenging. Millions of objects…
The Meteorites That Made Earth Were Filled With Water
According to the most widely accepted scientific theory, our Solar System formed from a nebula of dust and gas roughly…
Did Powerful Asteroid Impacts Make Venus So Different From Earth?
A new study connects impacts during Venus' early history to its smooth and "youthful" appearance today.
Venus Needed Asteroid Impacts to Get its Volcanoes Going
Unlike Earth, Venus lacks the plate tectonics that give rise to volcanoes. But the surface of Venus looks far younger…
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…
Mars Once had Enough Water for a Planet-Wide Ocean 300 Meters Deep
New research has shown that Mars may have been covered in a worldwide ocean when Earth was still covered in…
Early Earth was Pummeled 10x More Than Previously Estimated
It’s no secret that Earth was bombarded with plenty of meteors for billions of years during the solar system’s early…
There Should be More Material Left Over From Bombardment Eras. Maybe the Sun Blew it all Away?
The early solar system was an especially violent place. The terrestrial planets (Mercury, Venus, Earth, and Mars) likely formed by…