Jupiter, the largest planet in the solar system, was 2 to 2.5 times bigger in its earlier life, according to new research. Jupiter, the largest planet orbiting the sun, used to be much bigger and ...

Jupiter is already the biggest planet by far in our solar system, but new research suggests it was somehow once even larger than it is now. Twice as large, in fact. To put that into context, those ...

Io isn’t just another moon, it’s the most volcanically active body in the entire solar system. Orbiting Jupiter, Io is ...

Can you imagine? Jupiter is the big brother among the planets in the solar system, with a massive size and a mass that is 2.5 times the total mass of all other planets in the solar system combined.

I/ATLAS is a fast, ancient interstellar object. Its odd features fuel both scientific study and speculation. On July 1, ...

Federal funding is about to run out for 19 active space missions studying Earth's climate, exploring the Solar System, and ...

PASADENA, Calif. (AP) – Soaring over Jupiter’s poles, a NASA spacecraft arrived at the solar system’s largest planet on a mission to peek behind the cloud tops. The final leg of the five-year voyage ...

It’s like something out of an interplanetary chess game. Astrophysicists at the University of Toronto have found that a close encounter with Jupiter about four billion years ago may have resulted in ...

"We consider this phenomenon as a promising candidate to explain the fact that the solar activity is much more benign than ...

The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought experiment to it, highlighting everything ...

A planet 100 light-years away that resembles a young Jupiter has been discovered by an international team of astronomers that includes six UCLA scientists. The discovery is reported Aug. 13 in the ...