A surprise on the far side of the Moon.
- Scientists detect a gigantic, underground, metallic anomaly down a crater on the Moon.
- "Whatever it is, wherever it came from," it looks to be billions of years old.
- It's probably the remains of an asteroid that hit the Moon.
A tiny grain found within a meteorite in Antarctica sheds light on how the solar system itself came to be.
- Researchers cut open a small meteorite found in the LaPaz icefield in Antarctica to uncover a very surprising find.
- Inside this meteorite was a small inclusion that they determined came directly from the nova of a white dwarf to Earth.
- By studying the inclusion's composition, researchers were able to glean new insights into the thermodynamics of white dwarf novae, ultimately shedding light onto how solar systems like ours formed.
A new computer model solves a pair of Jovian riddles.
- Astronomers have wondered how a gas giant like Jupiter could sit in the middle of our solar system's planets.
- Also unexplained has been the pair of asteroid clusters in front of and behind Jupiter in its orbit.
- Putting the two questions together revealed the answer to both.
Two space agencies plan missions to deflect an asteroid.
- NASA and the European Space Agency (ESA) are working together on missions to a binary asteroid system.
- The DART and Hera missions will attempt to deflect and study the asteroid Didymoon.
- A planetary defense system is important in preventing large-scale catastrophes.
About 3.8 billion years ago, the inner planets were bombarded with a cataclysm of asteroids. Could Planet V have been the cause?
- The Late Heavy Bombardment (LHB) occurred about 3.8 billion years ago, during which time Earth, Venus, Mercury, and Mars were assaulted by asteroids.
- Scientists are pretty sure the LHB occurred, but they're not certain what caused it.
- It could be that a hypothetical fifth inner planet once existed in our solar system. As it left, it may have caused the LHB.