New research suggest
that one fifth giant planet, the other four are Uranus, Saturn, Jupiter and
Neptune, was disqualified from our system about 4,000 million years. That
mysterious world today could be thousands of light years away and, which is
just as surprising, it is possible to have moons that, if they meet the
appropriate conditions are still warm enough to support life. A summary of the
study can be found at arXiv.org.
