article_snippet.sent: the researcher views have been widely dismissed by the scientific community .
article_snippet.sent: Professor Francis Crick, one of the biologists who discovered the structure of DNA, examined the possibility of this in a paper in 1973.
article_snippet.sent: However, Professor Crick and his ccolleagues concluded that the scientific evidence was 'inadequate at the present time to say anything about the probability'. '
article_snippet.sent: However, the astrobiologist conceded it is virtually impossible to prove that the tiny sphere was sent by aliens from outer space.
article_snippet.sent: but Wainwright and his colleagues conclusions have yet to be corroborated by other scientists.
article_snippet.sent: Professor Francis Crick, one of the team who one a Nobel Prize for discovering the structure of DNA, examined whether it was possible that organisms could have been deliberately transmitted to the Earth by intelligent beings from another planet.
article_snippet.sent: Dr Wainwright eventually concluded that there was insufficient scientific evidence to support such a claim.
article_snippet.sent: Unless of course we can find details of the civilisation that is supposed to have sent it in this respect it is probably an unprovable theory,' Dr Wainwright added.
highlights_snippet.sent: research has been widely criticised by the scientific community .