Changes

In 1996 a flurry of excitement took place when some tiny fossils of microbial organisms were found on a rock that had crashed down to earth after being knocked free of the gravitational influence of [[Mars]] by a asteroid or comet, but scientists are still undecided what could have caused these and many robotic spacecraft have been sent to Mars to try to answer this fundamental question.  But apart from this, there is no evidence whatsoever of alien lifeforms.

In 1996 a flurry of excitement took place when some tiny fossils of microbial organisms were found on a rock that had crashed down to earth after being knocked free of the gravitational influence of [[Mars]] by a asteroid or comet, but scientists are still undecided what could have caused these and many robotic spacecraft have been sent to Mars to try to answer this fundamental question.  But apart from this, there is no evidence whatsoever of alien lifeforms.

The Search for Extraterrestrial Intelligence (SETI) is a program to scan the sky in radio bands likely to be used by other civilizations.  Thousands of candidate nearby stars have been examined, but no signal has been found.  In 1967 there was some excitement when a regular series of radio pulses were picked up, but this was determined to have natural causes and was the first detected [[pulsar]].

The Search for Extraterrestrial Intelligence ([[SETI]]) is a program to scan the sky in radio bands likely to be used by other civilizations.  Thousands of candidate nearby stars have been examined, but no signal has been found.  In 1967 there was some excitement when a regular series of radio pulses were picked up, but this was determined to have natural causes and was the first detected [[pulsar]].

[[category:culture]]

[[category:culture]]