The dotted white streak cutting across this photo of ... 1,000 previously unknown space rocks that reside in the main asteroid belt between Mars and Jupiter, hundreds of them less than 0.6 miles ...

"We now have the first outlines of a geologic map of the asteroid belt." Ten years ago, Jenniskens teamed up with astronomer ...

As a result, the asteroid appears as a sharp dot of light in the 120-second exposure, compared to the background stars, which exhibit short trails from their relative movement.

Most of the time these asteroids remain restrained within that interplanetary belt ... the asteroid, the bigger it will be. But its colour also affects the brightness as a small white asteroid ...