Tuesday, April 27, 2010

Facinating: Hawking talks about life in the universe

I am impressed with CNN seeking astronomer Jill Tarter, director of the Center for SETI (Search for Extraterrestrial Intelligence) Research, to explain further what famed scientist Stephen Hawking was saying in a documentary about intelligent alien life and that it must exist. Go to Discovery Channel to learn more.

Hawking is known for his contributions to the fields of cosmology and quantum gravity, especially in the context of black holes. He has also achieved success with works of popular science in which he discusses his own theories and cosmology in general; these include the runaway best seller A Brief History of Time.

Wikipedia information says Hawking has indicated that he is almost certain that alien life exists in other parts of the universe and uses a mathematical basis for his assumptions. "To my mathematical brain, the numbers alone make thinking about aliens perfectly rational. The real challenge is to work out what aliens might actually be like." He believes alien life not only certainly exists in planets but perhaps even in other places, like within stars or even floating in outer space. He also warns that a few of these species might be intelligent and threaten Earth. Contact with such species might be devastating for humanity. "If aliens visit us, the outcome would be much as when Columbus landed in America, which didn't turn out well for the Native Americans," he said. He advocated that, rather than try to establish contact, man should try to avoid contact with alien life forms.

Tarter says at CNN that "SETI searches will succeed and that the civilization that's transmitting is using a technology that is older and more advanced than our own. Of course he's right, but there's a lot of room for different opinions about what contact with an advanced technology would mean." Read more.