They believe that life may have evolved in at least three of the planets! At a press conference held in Washington associate administrator of NASA's Science Mission Directorate, Thomas Zurbuchen, said: "This gives us a hint that finding a second Earth is not a matter of 'if', but 'when'."
The "exoplanets", which are believed to have the properties needed to support life, were discovered using NASA's Spitzer Space Telescope and several ground-based observatories. According to lead researcher from the University of Liège, Michaël Gillon, "The planets are all close to each other and very close to the star, which is very reminiscent of the moons around Jupiter. Still, the star is so small and cold that the seven planets are temperate, which means that they could have some liquid water -and maybe life, by extension- on the surface."
Exciting space news!