Based on their calculations, researchers believe early Jupiter was 2 to 2.5 times larger than it is today with a much more powerful magnetic field.

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.

A team from Nagoya University in Japan and the Italian National Institute for Astrophysics (INAF) have used a new method to ...