Nasa spacecraft makes close approach to Jupiter moon Europa

Europa is thought to have an ocean flowing beneath its thick frozen crust (NASA/JPL-Caltech/SETI Institute via AP)

Nasa’s Juno spacecraft has made the closest approach to Jupiter’s icy moon Europa in more than 20 years.

Juno on Thursday zipped within 222 miles of Europa, thought to have an ocean flowing beneath its thick frozen crust, raising the possibility of underwater life.