It turns out that little Enceladus isn’t the only moon around Saturn doing more than spinning quietly in its orbit. The Cassini probe reveals that Tethys and Dione are mimicking their brother and ejecting spumes of matter into space, which may be evidence of geological activity of some sort. Of course, we’ll not know for sure until we get a proper mission ot there to land on these bodies – so let’s hope Ad Astra’s new plasma rocket continues breaking records during testing procedures. For more local transport, though, Astrium’s new space tourism vehicle would be more suited – and the design looks pretty sexy, too.