In 2018, one such meteorite from that time hit Botswana It was not unique. Over 30 percent of such Howardite-Eucrite-Diogenites (HED) meteorites that hit Earth year come from just the impact that formed the Antonia crater on Vesta. It's a great location because it has little snow and almost no dust - from Earth. Using decades of data allows them to extrapolate that out and it means we are being bombarded by millions of pounds of space dust each year. : The micrometeorite flux at Dome C (Antarctica), monitoring the accretion of extraterrestrial dust on Earth.