The unique capabilities of the SPHERE instrument on ESO’s Very Large Telescope have enabled it to obtain the sharpest images of a double asteroid as it flew by Earth on 25 May. While this double asteroid was not itself a threatening object, scientists used the opportunity to rehearse the response to a hazardous Near-Earth Object (NEO), proving that ESO’s front-line technology could be critical in planetary defense.
Things fall from the sky. It happens. Rain, snow, sleet, and hail, maybe even birds, or the occasional clumsy squirrel. Asteroids, on the other hand — those generate some interest. Which is why when NASA’s Jet Propulsion Laboratory (JPL) reported that not one, but two small asteroids will come within a Moon’s distance of Earth this week, people took notice.