Extrasolar planets

The 4 ways scientists can detect planets are radial velocity, Astrometry, Transit Method, Optical Detection.

Astrometry makes more sense because it give you the precise measurement of the position of the stars. It tells you the stars motion and from that scientists can figure out the orbit and mass of it.

The Goldilocks Zone is called the life zone. It is the area where the planet is just the right distance from its home star and its surface is not hot or cold. This means that the planet could possibly have water.

If the Gilese 581c had life on it I think they would look like fish because it might be covered in water. I think they would act weird because their planet has twice as much gravity as Earth and that they live in water. I do not think they would be intelligent because they live in water.

I do not believe in aliens because the whole idea of them is crazy. No one has ever seen them before and where would they live. I am sure that Scientists have looked at all the planets by now and if there were really aliens out there they would have seen something. If there were really aliens I think they would have come to Earth by now or did something to show us that they were real.