It's easy to take it for granted that our own solar system, with one star, is the norm - but it turns out that this may not be the case.
Planets with two suns like Luke Skywalker's homeworld may be as common as planets orbiting a solitary star.
Astronomers have revealed the discovery of a Jupiter-sized exoplanet in a distant binary star system.
Astronomers believe that desert planets similar to Tatooine in Star Wars might actually be common.