Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our ...

Over the past century, astronomers have speculated about the existence of a mysterious 9th planet lurking in the outer ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is only the third celestial ...

It may not feel like it, but everything in the universe is in constant motion. Our Sun, with all its planets, orbits the center of the Milky Way, flying through the cosmos at around 450,000 miles per ...

A newly-discovered planet named Enaiposha, GJ 1214 b, is unlike anything found in our own solar system, similar to a ...

"We not only reconstructed an unaltered image of the emissions from deep space, but also obtained valuable information on the ...

A NASA mission to study the heliosphere—the sun's magnetic bubble that shields our solar system—and develop a better understanding of space weather was launched from the agency's Kennedy Space Center ...

Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

Add Yahoo as a preferred source to see more of our stories on Google. A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around ...