Hubble is the Ultimate Multitasker: Discovering Asteroids While it's Doing Other Observations

It looks like a poster of the famous Hubble Deep Field, marked with white streaks by a child, or put away carelessly and scratched in the process. But it’s not. The white streaks aren’t accidents; they’re the paths of asteroids. A couple years ago, the NASA/ESA Hubble Space Telescope was observing very distant galaxies, some …