Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

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

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...

NASA has discovered 3I/ATLAS, only the third known interstellar object, now passing through our solar system from the ...

The Solar System might not be as quiet and orderly as we think. Imagine one day looking up and seeing something strange in the sky, a small speck that grows larger and larger. Soon, it becomes clear: ...

Webb has directly imaged a young gas giant planet roughly the size of Saturn, our solar system's second-largest planet ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a ...

Webb has directly imaged a young gas giant planet roughly the size of Saturn, our solar system's second-largest planet, ...

Third-ever confirmed visitor, dubbed 3I/Atlas and hurtling at 60 kilometers per second after likely being formed in distant ...