The shell of Jupiter's famous ice moon may be formed, in part, by pure underwater snow that floats up instead of falling down. A new study, published in the August issue of the journal Astrobiology,… [+3158 chars]
Jonathan AmosScience correspondent@BBCAmoson Twitter The American space agency Nasa has rolled out its giant new Moon rocket to prepare it for a maiden flight. Known as the Space Launch System (SLS… [+4804 chars]
