Scientists say they've identified a sun-like star with as many as seven different planets - including one that might be the smallest ever found outside the solar system.
If confirmed, the planetary system around HD 10180, a star more than 100 light years distant, would be the richest ever discovered. One astronomer says it's part of a growing body of evidence that the universe is full of planets - and that several could be similar to our own.
"The really nice thing about finding systems like this is that it shows that there are many more out there," said Alan Boss, of the Washington-based Carnegie Institution for Science, who wasn't involved with the find. "Mother Nature really had fun making planets".'