“In the stable of 400,000 stars that TESS is looking at, we wonder which are the stars that we should take really good note of, because these are the ones where we can actually find a planet that will get the same energy from its star that we get from our own,” says study leader Lisa Kaltenegger, director of the Carl Sagan Institute at Cornell University. “We don’t know if that would mean it could have life, but it would be equal in energy, so it could be a similar environment to Earth.”