The search for extraterrestrial intelligence (SETI) could be taking the wrong approach. Instead of listening for alien radio broadcasts, a better strategy may be to look for giant structures placed in orbit around nearby stars by alien civilisations.
If intelligent life exists elsewhere in our galaxy, advances in computer processing power and radio telescope technology will ensure we detect their transmissions within two decades, says SETI Institute senior astronomer Seth Shostak.
Tiny black holes may be detonating like time bombs all over our cosmic backyard. The explosions could explain a class of unusual energy bursts that have been picked up here on Earth, say physicists in the US.
Multiverse theory -- the idea that our Universe is part of the multiverse, a domain of parallel universes that comprises ultimate reality -- is gaining credibility due to the work of David Deutsch. His theory predicts that these multiple universe are real enough that we can mould their fate and exploit them.