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

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

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

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.

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

Astronomers have calculated that the gas giant Jupiter used to be twice as big as it is now, based on the odd orbits of two ...

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

A new study published in Nature Astronomy on May 20, 2025, uncovers that Jupiter was once twice its present size ...