Planets aren't the only things in the solar system with auroras. Comets can have them too, data from the European Space Agency's Rosetta mission has revealed.
Comets are remnants from the early days of the solar system, billions of years ago. Primarily made of ice and dust, these "dirty snowballs" orbit the sun and in habit the Oort cloud, an area in the outskirts of the solar system beyond Pluto. As comets approach the inner solar system, solar wind from the sun can sweep dust back into a long tail. When these comets are close enough to Earth, they can appear as dazzling objects in the night sky. Space probes from Earth have visited several comets to learn more about their composition. Learn more about comets, icy wanderers in the solar system.
The Hubble Space Telescope turned its powerful eyes to a celestial visitor to our skies — Comet NEOWISE, which put on a stunning show in the United States earlier this summer.
Comet NEOWISE has returned to the skies and is delighting skywatchers. So what makes this comet so special?
Skywatchers the world over are buzzing about Comet NEOWISE, the first easily-visible comet to appear in years. Your favorite mobile astronomy app can tell you when, where and how to look for it.
The gorgeous image shows Comet NEOWISE blazing above a Falcon 9 rocket that's poised to launch South Korea's first military satellite today (July 20).
Images of bright comet C/2020 F3 (NEOWISE) show signs of a sodium tail, giving scientists fresh insight on what's happening on the surface.
Are you excited to spot Comet NEOWISE as it pops into view in the night sky? Do you want to try your hand at photographing the cosmic snowball?
Astronomers are buzzing about Comet NEOWISE, which observers under clear, dark skies in the Northern Hemisphere can currently see with the naked eye.
See photos of Comet C/2020 F3 NEOWISE, which is bright enough to spot with the naked eye, seen from Earth and space.
NASA's record-breaking Parker Solar Probe has given us a great new look at the gorgeous comet that's been gracing our predawn skies.
Comet NEOWISE is starting to put on a show for skywatchers, and not just those of us restricted to Earth's surface.
Astronauts caught a stunning natural light show this weekend from a comet that has been dazzling skywatchers on Earth as well.
A spacecraft that launched a quarter century ago to study the sun has discovered its 4,000th new comet in a spree of serendipitous science.
You'll need a minute to take it all in, there's a lot going on in this stunning view of the inner solar system, including a comet, Mercury and some solar weather.