Sandbox craters reveal secrets of planetary splash marks and lost meteorites
by Andrew Scott, Okinawa Institute of Science and Technology
Every day, Earth is constantly bombarded by about 100 tons of falling objects from space, mostly simple dust or sand-sized particles that are destroyed as they hit the upper atmosphere. But very rarely, a piece large enough to survive the intense heat of entry manages to fall all the way down to the Earth's surface, where its galactic journey ends with a bump.
Read more at: https://phys.org/news/2018-06-sandbox-craters-reveal-secrets-planetary.html#jCp