Planet 9 search leads to 68th, 69th Jupiter moons' discovery
The International Astronomical Union announced the discovery of two new moons, bringing the tally of Jupiter's known moons to 69. US-based astronomer Scott Sheppard and his team were looking for Planet Nine in the Solar System when they first observed the moons in March 2016 and 2017. "Jupiter just happened to be in the area we were looking," Sheppard said.