Hobbyist astronomer discovers new Jupiter moon 18 years after the photos were taken.

In 1974, NASA's Pioneer 11 spacecraft viewed Jupiter from above its north pole. Image credit: NASA Ames One might believe something as monumental as discovering a new moon would be the result of efforts from professional astronomers. However, an amateur by the name of Kai Ly discovered a new moon for the planet Jupiter on June 30th. Ly was scanning old datasets from 2003 when it was identified. 'I'm proud to say that this is the first planetary moon discovered by an amateur astronomer,' Ly tells...