The birth of a new solar system may have been caught on camera. About 1,400 light-years from Earth sits a young sunlike star surrounded by cooling gas and teensy silicate minerals. These mineral ...

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

Earth Day is April 22, but activities begin this weekend. They include a festival featuring Washington’s favorite geologist, ...

From mysterious moons to breathtaking phenomena, this video explores the wonders that exist beyond our planet. Learn about bizarre exoplanets, awe-inspiring cosmic events, and mind-blowing discoveries ...

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system. First named A11pl3Z and now designated as ...

Scientists say a nearby red dwarf star hosts a planetary lineup that looks like a mirror image of our own solar system, with rocky worlds bookending a pair of gas-rich planets. Around the star LHS ...

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Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new simulations show. By Katherine Kornei If our species manages to hang on ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...