Apollo 15 landing site is strikingly clear in image captured from Earth

Geologists produce new timeline of Earth's Paleozoic climate changes

Citizen scientists discover dozens of failed stars (brown dwarfs) near Earth.

A twenty-five-thousand-trillion-ton rock, about the size of New Jersey, hit the moon 4 billion years ago. The impact caused molten seas to flow for millions of years. The Apollo 17 astronauts picked up pieces form the shore of that lava ocean, and one of those pieces is now in the White House.