Hot Jupiters — massive gaseous exoplanets orbiting close to their host stars — have surprisingly powerful magnetic fields, many times stronger than our Solar System’s Jupiter, according to a paper published in the journal Nature Astronomy. This illustration shows a hot Jupiter orbiting so close to a red dwarf star that the magnetic fields of both interact, producing activity on the star. Image credit: NASA / ESA / A. Schaller, STScI. Hot...
