Using a new technique that partly relies on artificial intelligence, researchers spotted potentially more than 10,000 new ...

A rare comet from another star system is revealing just how different alien solar systems may be from our own.

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

Add Yahoo as a preferred source to see more of our stories on Google. But now a fourth and much larger object has been spotted entering the solar system, and the scientific community is rushing to ...

There may be another world lurking between the orbital lines of our solar system. Astronomers in Japan have published their theory of an “Earth-like planet,” dubbed Planet Nine, that’s hiding in plain ...

3I/ATLAS is now exiting our solar system at more than 137,000 miles per hour.

"If our solar system is indeed moving this fast, we need to question fundamental assumptions about the large-scale structure of the universe." When you purchase through links on our site, we may earn ...

Approximately 4.5 billion years ago, a cold cloud of gas and dust buried deep in one of the Milky Way galaxy’s spiral arms started to collapse. From there, gravity worked its magic. The cloud began to ...

Look up at the night sky and among the stars you might see a few brighter dots — the planets in our solar system. What you won’t see, though, are the most common kinds of planets in the Milky Way: ...

From an early age, we are taught to understand that the planets of our solar system change in position while orbiting a central star, the sun. But does the sun itself move within the solar system?

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically different from anything known to have ever formed around our sun ...