A leading British space expert is convinced humanity will encounter extraterrestrial life within the next five decades - though she warns they might resemble nothing more exciting than 'grey sludge'.

Saturn and its moons: Dione, Enceladus, Tethys, Janus, Epimetheus, and Mimas NASA, ESA, A. Simon GSFC) and the OPAL Team, and J. DePasquale (STScI A new study allegedly finds that one of Saturn's ...

The curious minds at What If reveal a planet scientists found that could host alien life, exploring atmosphere, water, and potential biology.