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By subscribing, you agree to our Terms of Use and Policies You may unsubscribe at any time. Scientists at the Carl Sagan Institute at Cornell state that we might not be focusing on the right color in our pursuit to find life on other planets. Back in 2013, NASA published a piece that suggested that we expand our current focus to include other colors, but that hasn't happened yet, and no one thought of purple. Until now. Thus far, we have not found signs of life on other planets though scientists have found 5,500 worlds that circle other stars. A couple, even, orbit around a star at the appropriate distance, so they could have life-giving properties such as water. And what are the signs of life?Our daily news digest will keep you up to date with engineering, science and technology news, Monday to Saturday.