In fact, they're so common that scientists now think that stars with planets orbiting them are more the rule than the exception. (science.howstuffworks.com)
Suppose 1 per cent of these have small rocky planets orbiting them and suppose that 1 per cent of such planets are habitable. (newscientist.com)
The distance between the two stars that are separated by only 360 astronomical units is extremely close for twin stars with planets orbiting them, scientists said. (ibtimes.com)