Scientific American spoke with the astronomer who has contributed to the discovery of two thirds of Saturn’s known moons ...

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

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 ...

Jupiter wasn’t always the planet we know today—it was once twice as big, had a magnetic field 50 times stronger, and its ...

The study by Konstantin Batygin of Caltech and Fred Adams of the University of Michigan pulls off a rare feat in planetary ...

The King of the Planets teams up with an exceedingly narrow crescent moon for the last time this year in the evening sky on ...

Twice as large, in fact. To put that into context ... The celestial objects are so small, they're not even among Jupiter's four famous Galilean moons, which does include Io.

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

Jupiter joins Mercury in early twilight as Mars lingers with Leo after dark. Saturn is visible in the morning, meeting ...