The Hubble Space Telescope has seen cyclones raging in the dynamic atmosphere of a hot Jupiter located 880 light years away thanks to observations and computer modelling that could one day be applied to characterise weather on smaller rocky exoplanets. The planet, dubbed WASP-121 b, has a mass about 1.16 times greater than our Solar System’s Jupiter and orbits its star at a distance of just 3.88 million kilometres (2.41 million miles). That’s just 2.6 per cent the distance between Earth and the Sun. Furthermore, WASP-121 b speeds around its star once in
