It looks like we have a new neighbour. It's actually been there all along, but astronomers have only now spotted what could be the seventh closest star system to the sun. The system is just nine light years away, a mere stone's throw in astronomical terms. It took so long to find because it's an extremely dim and cool kind of failed star called a brown dwarf. Astronomers found it using NASA's WISE satellite. WISE's infrared cameras allow it to find objects that are not bright enough to see by visible light alone.Read more