I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

A small, inconspicuous meteorite may be about to change our understanding of how and when our solar system formed. Tiny shavings from the meteorite Northwest Africa 12264 are challenging the long-held ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

Captured just days after its discovery, the images offer the clearest view yet of this rare visitor from beyond our solar system.

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever encountered.

What at first seemed a routine detection of an object travelling through the solar system soon turned out to be anything but.

Astronomers have confirmed the third interstellar object on record is dashing through our solar system. Dubbed 3I/ATLAS, it ...

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.

As more satellites are launched into orbit, space agencies are looking at how to predict space weather events that could harm ...

Thousands of solar tornadoes swirl above the sun’s surface at any given moment. These remarkable photos give us a glimpse at these stunning cosmic phenomena.

Installing solar panels for your home can be a long-term investment that pays for itself in the long run or just a step toward greener living through sustainable energy.