The Juno spacecraft in orbit around Jupiter’s poles continues to send back jaw-dropping views of the giant planet’s turbulent atmosphere, including this down-the-throat look into a 2,000-kilometre-wide (1,200 miles) cyclonic storm at 49 degrees north latitude. Jupiter is composed mostly of hydrogen and helium, but some of the colour in the clouds seen here may be the result of sulphur and phosphorus gases rising from the warmer interior. Citizen-scientist Kevin M. Gill processed this image, captured by the Junocam instrument on 3 November at an altitude of about 8,500 kilometres (5,300 miles) during Juno’s 23rd close flyby.
The existence of a fifth giant gas planet at the time of the solar system’s formation — in addition to Jupiter, Saturn, Uranus and Neptune that we know of today — was first proposed in 2011. Now astrophysicists at the University of Toronto have found that a close encounter with Jupiter about four billion years ago may have resulted in the fifth giant planet’s ejection from the solar system altogether.
Citizen scientists process a stunning image of a giant storm in Jupiter’s northern hemisphere taken by NASA’s Juno spacecraft during its 11th close flyby of the giant planet. Bright cloud tops look similar to storm clouds on Earth, although the scale is vastly larger. Juno is giving planetary scientists a unique view of Jupiter from the spacecraft’s polar orbit.