The space agency's audio website features hundreds of free tracks and podcasts, ranging from audio of Neil Armstrong on the moon to records designed for alien civilizations You can save this article ...

For decades, the search for life beyond Earth has focused on distant exoplanets and the rusty plains of Mars. Now, a small icy world in orbit around Saturn is emerging as one of the most compelling ...

Life on Earth can be found in the strangest of places, from tens of thousands of metres in the sea to a bubbling tar pit in Trinidad. But scientists have suggested that life – alien life – could be ...