The Milky Way is one of the biggest in the observable universe: Even if you traveled at the speed of light, it would take 100 ...

The seven other planets in our solar system can be seen in the sky at once through Friday, forming a planet parade. But two ...

Learn about NASA's SPHEREx mission, which will launch on March 7, 2025 to study the universe's early history and search the ...

"We found that some comets in the inner Oort cloud form a long-lasting spiral structure." Spirals are a repeating theme in ...

Astronomers have discovered nearly 6,000 planets beyond our own solar system. Here's how — and how we'll find even more.

Millions of years ago, our Solar System traveled through a densely populated galactic region and was exposed to increased ...

While all seven planets could appear in some form in parts of the U.S., not all of them will be visible to the naked eye.

The shot of our planet and the great cosmos beyond offers an eerie sense of scale to our quotidian situations on Earth.

Unlike the typical blue-and-green depiction of Earth, this photo shows the planet in a mossy green hue, framed by a thin ...

If there were such a thing as a photo album of the universe, it might include snapshots of pancake-like disks of gas and dust, swirling around newly formed stars across the Milky Way. Known as ...

A star racing through the Milky Way may have a planet in tow, setting a new speed record for exoplanet systems. Using ...

The World Awards were founded in the belief that we can all make small efforts to shape the future of our planet in a ...