Craters on the Moon, by age

Solar System

Asteroid Impacts Increased 290 Million Years Ago, Lunar Craters Reveal

Researchers have estimated the ages of craters on the lunar surface, finding that the rate of large impacts nearly tripled 290 million years ago — an increase that might be ongoing.

an adult and two children look at something offscreen while sitting in front of a crowd of people

Cosmic Relief with David Grinspoon

Lunar News Flash

Did scientists make LCROSS seem like a dud by raising expectations of a spectacle?