Eric Geller @ericgeller
"Dr. Tonry was surprised by how much debris was knocked off the asteroid and how fast it was moving. 'This stuff was screaming out at two kilometers a second, like 4,000 miles an hour,' he said. 'And so within an hour, that cloud was as big as the Earth.'" https://t.co/iwDKwd8Jj1 — PolitiTweet.org
