have water knowing we don't have a telescope built that can see it? >> right we are only detecting incorrectly by watching the wobble that is produced by the planet's pulling on the star and watching the wobble on the center mass. we know how bright the star 1/ 100 as bright as our sun. we can figure out how hot you would be given distance from the sun knowing the period in which the star wobbles due to the planet roughly every 37 days, that means the planet has a distance 10 times closer to its star than our earth is. since the sun is roughly 100 times less bright that means that we have about the same amount of sunlight hitting us on that land net as we hit on earth that means we are smack-dab in the habitable zone where liquid water could exist. those two factors combined to say it is just the right temperature to be the goldilocks planet. >> uma: what do you think is