Jupiter, the largest planet orbiting the sun, used to be much bigger and stronger when the solar system was just beginning to ...

With an atmosphere, by mass, of primarily hydrogen (76 per cent) and helium (24 per cent), and by volume of 89 per cent ...

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

In its earliest days, Jupiter may have been even more colossal than it is now—twice as large, in fact, with a magnetic field ...

Understanding Jupiter's early evolution helps illuminate the broader story of how our solar system developed its distinct ...

The new calculations, described in a paper published Tuesday (May 20) in the journal Nature Astronomy, suggest that just 3.8 million years after the solar system's first solid objects formed, Jupiter ...

To better understand Jupiter’s primordial stages, researchers turned to the tiniest of the planet’s 92 known moons. Almathea ...

Scientists focused on Jupiter's little moons Amalthea and Thebe. Their peculiar orbits didn't quite fit with Jupiter's ...

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 ...