But so far, only one other system like ours has been spotted: In 2006 astronomers found a star with its own versions of Jupiter and Saturn.

If we want to find planets that could support life, he says we should look at stars that are dying.

But when they looked for the source, there was nothing there, no planet, no star.

Ideally, they would look for the planet to pass in front of the star, but that would work only if the planet orbits at just the right angle, he says.

Well, that one is one of the most relevant jobs our Stellar Spaceship carries out.