SpaceSaturn moon spouts plasma unlike any seen before The geyser moon Enceladus is pouring a new type of charged particle into space, creating a "backwards" plasma 51¶¯Âþ
LifeGalactic laser light show might lead us to aliensGeoff Marcy is a prolific planet hunter, but now he's turning his gaze to alien civilisations. He hopes they may be criss-crossing space with laser beams Opinion