Astronomers using the European Southern Observatory have found a five-planet solar system around star HD 10180. This is significant in that it’s the most planets in a single exo-solar system ever found.
The researchers said the system around HD 10180 as unique in several respects.
It has at least five “Neptune-like planets” lying within a distance equivalent to the orbit of Mars, making it more populated than our own Solar System in its inner region. And all the planets seem to have almost circular orbits.
You can read more about this discovery over at the BBC.