Astronomers believe they've discovered a spiral structure inside the Oort cloud that surrounds our solar system.

Astronauts aboard the International Space Station (ISS) have a front-row seat to some of the most extraordinary sights in the ...

Fast-moving stars in the Milky Way indicate there could be a supermassive black hole in the neighboring Large Magellanic ...

Have you ever wondered how astronomers manage to map out the Milky Way when it's so incredibly vast? One of the most powerful ...

Astronomers have discovered that billions of comets in an icy shell around the solar system called the Oort Cloud mimic the ...

Our Solar System is in motion and cruises at about 200 kilometres per second relative to the center of the Milky Way. During ...

Newly discovered Quipu, a superstructure in which galaxies group together in clusters and clusters of clusters, is the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers using ...

"We found that some comets in the inner Oort cloud form a long-lasting spiral structure." Spirals are a repeating theme in astronomy, with arguably the most famous example of a swirling armed ...