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

The photos show two large white patches sitting side by side in the gas giant's Southern Equatorial Belt (SEB) — an enormous dark band of clouds that spins around Jupiter as it rotates.

NASA astronaut Don Pettit imaged the Large and Small Magellanic Clouds as the International Space Station cruised 260 miles above the Pacific Ocean. What it is: The Large Magellanic Cloud and the ...

These giant clouds of dust and gas that fill the space between stars have long captivated onlookers with their ethereal beauty. Here's a look at some of the most breathtaking nebulas in the universe.

NASA astronaut Don Pettit has posted another set of stunning shots, this time showing clouds as you’ve never seen them before. Captured from the International Space Station (ISS) some 250 miles ...

NASA and ESA’s Hubble Space Telescope has been observing the outer planets through a program called OPAL (Outer Planet ...

A giant cloud of haze frequently fills this ancient valley at the foot of the Himalayas, which was once an enormous ...

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