Alien life has been among us all along, according to new biological findings announced by NASA Thursday.
Research conducted by biochemist Dr. Felisa Wolfe-Simon from the U.S. Geological Survey has turned the quest for alien life on its ear, suggesting that phosphorous -- which is found in every living thing -- is not necessarily the only sign of life. Wolfe-Simon will explain the findings at a hotly anticipated NASA press conference today at 2 p.m.
After a two-year study at California's Mono Lake, near Yosemite National Park, Wolfe-Simon found that a bug will grow in the presence of the toxic chemical arsenic when only slight traces of phosphorous are present. It's a radical finding, says molecular biologist Steven Benner, who is part of NASA's "Team Titan" and an expert on astrobiology -- forcing the space agency to redefine the quest for other life in the universe.
"When we're searching for alien life, if it's not a Ferengi from Star Trek, what would it be?" Benner asked FoxNews.com. In his estimation, we've always defined life as something that has the exact same chemistry as a life-form on Earth. The new discovery will likely change that equation, because it means the basic building blocks of DNA are not quite what we thought.
Benner, said the organism at Mono Lake grew without high levels of the nutrient phosphate (although some phosphates were still present). Just as important, it could change how we look for alien life on other planets, especially on Saturn and the moons of Jupiter.
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