Europa, Jupiter's fourth-largest moon, has been hailed as one of the most likely locations for aliens to exist in our solar system. Now, NASA may have the chance to find out, as its ambitious Europa Clipper mission is set to launch on an ambitious five-and-a-half-year journey to investigate. 

After a delay caused by Hurricane Milton, Clipper will launch from NASA's Kennedy Space Center in Florida at 12:06 ET (17:06 BST) today. (Daily Mail)