A renowned physicist believes he's cracked the mystery of where a giant unidentified object hurtling through our solar system ...

Observations from NASA’s Juno spacecraft reveal that Jupiter’s strong magnetic field and the unique properties of its plasma ...

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

Ancient meteorite reveals a protoplanet formed in the outer Solar System earlier than thought, reshaping planet formation ...

Astronomers have spotted centimeter-sized “pebbles” swirling around two infant stars 450 light-years away, revealing the raw ...

Neptune is called an “ice giant” because it’s mostly made of a thick, slushy mix of water, methane, and ammonia, which ...

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 ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

A fluffy, Jupiter-sized planet may be triggering deadly flares from its star, leading to the slow destruction of its own ...

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

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