British astronomers have set up an experts' network to promote the search for extraterrestrial intelligence, the Royal Astronomical Society said on Friday.
A return to the Moon could be hampered by dust, a poorly-understood threat to machines and people alike, according to a presentation at a space conference that ended Friday.
Two billion years from now, an ever-hotter Sun will have cooked the Earth, leaving microbes confined to pockets of water in mountains or caves as the last survivors, a study said Monday.
