Complex sentence: HD 150706 is a sunlike star of spectral type G0V some 89 light-years distant from our Solar System that was thought to have a planet as massive as Jupiter at a distance of 0.6 AU that was subsequently discounted in 2007.
Split into simpler sentences: HD 150706 is a sunlike star of spectral type G0V some 89 light-years distant from our Solar System. It was thought to have a planet as massive as Jupiter at a distance of 0.6 AU, however this was subsequently discounted in 2007.