Who's watching Who

Although we knew before,now we have proof. Hubble has snapped up pictures of a planet orbiting around a star outside our solar system.For the first time there is an opportunity to study the nature of an other solar system other than ours.This may help us to understand and arrive at generic patterns across several solar systems.

The planet, Fomalhaut b, maintains an orbit around the star Fomalhaut and has three times the mass of Jupiter. "Our Hubble observations were incredibly demanding. Fomalhaut b is 1 billion times fainter than the star. We began this program in 2001, and our persistence finally paid off," said Hubble astronomer Paul Kalas, of the University of California at Berkeley.

So we can see it will take an awful lot of time to study and to compare & contrast with our system.I think we need lot more  Hubbles if we hope to do so.