Over the last ten years, OPAL has observed Uranus' northern hemisphere, which has faced the inner solar system for the ...

Encountering Neptune in 1989, NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer ...

The rate of expansion of the universe today is a figure known as the Hubble constant, which is typically measured in units of ...

It is the first object identified as a quasar ... it can be seen with a small telescope. To observe its details, however, ...

A Hubble Space Telescope image of the core of quasar 3C 273. A coronagraph on Hubble blocks out the glare coming from the supermassive black hole at the heart of the quasar. This allows astronomers to ...

The telescope has offered an unprecedented view of a supermassive black hole at the center of a quasar as it munches material in space.

Astronomers have used the unique capabilities of NASA's Hubble Space Telescope to peer closer than ever into the throat of an ...

Hubble Space Telescope can "only see the universe in shades of grey," according to NASA's Goddard Space Flight Center. Learn how the imagery is processed into amazing color views of the cosmos. Credit ...

The Hubble Space Telescope has peered deeper than ever before into the heart of the supermassive black hole-powered quasar 3C ...

Astronomers have discovered over a thousand photos of asteroids that had been hiding in Hubble images, unnoticed until now.

The James Webb telescope spent another year collecting instantly iconic space imagery. Here are some of our favorites.

Astronomers have used the unique capabilities of NASA's Hubble Space Telescope to peer closer than ever into the throat of an ...