Extraterrestrial material falls onto the Earth all the time—mostly in the form of dust! About 5000 tons of extraterrestrial dust falls onto our planet's surface every year. (Plus about 10 tons of meteorites.)
Extraterrestrial material falls onto the Earth all the time—mostly in the form of dust! About 5000 tons of extraterrestrial dust falls onto our planet's surface every year. (Plus about 10 tons of meteorites.)