Hubble just spotted something massive coming out of Uranus | Physics-Astronomy:
"HUBBLE JUST SPOTTED SOMETHING MASSIVE COMING OUT OF URANUS
Bursts of solar winds caused a huge sparkling region on Uranus, scientists observed this by using Hubble space telescope.
Electrons that come from various origins such as solar winds, the planetary ionosphere and moon volcanism, when charged in the form of streams caused this, researchers from the Paris Observatory used the NASA/ESA Hubble Space Telescope to observe this on Uranus.
They were able to catch it in powerful magnetic fields and, controlled it into the upper atmosphere, where set off spectacular bursts of light when made interactions with gas particles, such as oxygen or nitrogen.
...They found themselves observing the most intense auroras ever seen on the planet..."