SpaceX’s Starlink satellites leave streaks in asteroid-hunting telescope’s images

A prime ground-based observatory that scans the sky for exploding stars and dangerous near-Earth asteroids is struggling with disruptive light streaks from SpaceX’s Starlink internet satellite constellation, a new study revealed. 

The observatory, called the Zwicky Transient Facility (ZTF), opened its telescope eye in California in 2017. Scanning the entire sky every two days, the observatory looks for the temporary brightening or sudden appearance of objects that remain visible only briefly. It hunts for supernova explosions of dying stars and  asteroids passing close to Earth.