SETI uses the Arecibo's 305-meter telescope — the largest in the world — to scan the sky for signals from alien civilizations all year round.
Humans have long wondered whether we are alone in the universe. According to scientists working with the Search for Extraterrestrial Intelligence (SETI) Institute, the question may be answered in the near future.
"It's unproven whether there is any life beyond Earth," Seth Shostak, senior astronomer at the SETI Institute, said at a House Committee on Science, Space and Technology hearing Wednesday (May 21). "I think that situation is going to change within everyone's lifetime in this room."
Scientists search for life beyond Earth using three different methods, Shostak said.
The first method involves the search for microbial extraterrestrials or their remains. Investigations include robotic missions to Mars, such as Curiosity and Opportunity, which are currently searching for signs that the Red Planet could once have hosted potentially habitable environments.
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