For over a century, the search for life on Mars has been one of humanity's biggest mysteries. For a planet perceived as having too hostile an environment to support any form of life, public perception of Mars seemed rooted less in reality and more in fantasy. But the public's perception of Mars could soon be much different, reports CBS News correspondent Elaine Quijano. Later today, NASA may unveil a scientific breakthrough that could solve what it's calling "the Mars mystery." The announcement comes three days after the space agency announced that a "major scientific finding had been made" and "Mars mystery solved" on Twitter.