In 2013, astronomers discovered two rings around 250-km-wide Chariklo; nine years later, James Webb found the inner ring more opaque and the outer ring weaker

• Maquet, Observatoire de ParisIn 2013, astronomers discovered two narrow rings around Chariklo, a 250-kilometre-wide minor planet orbiting between Saturn and Uranus, marking the first time rings had been found around such a small body.
• Nine years later, the James Webb Space Telescope observed the same system during a rare stellar occultation and found that the inner ring had become noticeably more opaque while the outer ring appeared weaker and more transparent.