Cosmic Tribune

Little rocks hit Earth daily; the big ones every millennium or so

Little rocks hit Earth daily; the big ones every millennium or so

[FOR HIGH RESOLUTION, CLICK ON IMAGE / Credit: R. Evans & K. Stapelfeldt (JPL), WFPC2, HST, NASA] Rocks from space hit Earth every day. The larger the rock, though, the less often Earth is struck. Many kilograms of space dust pitter to Earth daily. Larger bits appear initially as a bright meteor. Baseball-sized rocks and […]