Actually, this last February NASA’s Spitzer Space Telescope found seven earth-like planets orbiting a single star – with three of those planets located in the habitable zone. The system is called TRAPPIST-1.
We, at the Jet Propulsion Laboratory, created an artist concept showcasing our vision of the planets which is based on the data we have collected from observing them. It’s an idea of something that seems inconceivable in more realistic forms.
Certainly, finding life is one of NASA’s objectives, but until we find real life we can’t just make up what it might look like. It was a great discovery when NASA found evidence of former flowing, briny water on Mars. Suddenly everyone’s minds sparked thinking if there was water, then there was life.