This weekend, famed physicist Stephen Hawking rocked the residents of this world with his declaration that aliens are likely to exist but should be avoided at all costs. First contact, he warned, could prove to be "much as when Christopher Columbus first landed in America, which didn't turn out very well for the Native Americans."

Some scientists publicly refuted Hawking, blasting his pessimistic prediction of an extraterrestrial encounter. Meanwhile, other researchers have rallied behind him, offering similarly wary predictions.

To read the rest of the article, click here.