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. via /r/space

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.
by inspace