One of the most prolific camera eyes on the Hubble Space Telescope has gone dark, and scientists are scrambling to understand why. Hubble's Advanced Camera for ...

Scientists have identified a strange cosmic relic called Cloud-9 — a starless, gas-filled object dominated by dark matter.

This Hubble image shows NGC 4455, a barred spiral galaxy located in the constellation Coma Berenices. The image was taken by Hubble’s Advanced Camera for Surveys (ACS). NASA / ESA / Hubble / I.

In what amounted to electronic brain surgery, a space-suited astronaut cut through shielding on a broken camera deep inside the Hubble Space Telescope on Saturday, removed a cover plate that wasn't ...

First motion is almost always a big event in the world of space exploration. Whether the first motion is of a wheel beginning to rotate or a rocket lifting off the pad, first motion means things are ...

The main camera on the Hubble Space Telescope is operating normally again after being blinded for 2 weeks by an electrical failure. The orbiting observatory’s Advanced Camera for Surveys, which has ...