The new 'Pi Planet' which was first detected in 2017 is named as K2-315b, as it is the 315th planetary system discovered using K2 data.
The research found that there are more stars like the Sun than expected in these groups, which would increase the chances of finding Earth-like planets.
The unique gravitational balance of the new solar system tells us how planets may have formed around the star, and gradually come together into a system.
Wolf Cukier was working for NASA's Transiting Exoplanet Survey Satellite (Tess) programme, which, for the first time, discovered a planetary system with two stars.
The newly discovered planet circles the star HD 21749 and has roughly the same size as Earth, but its proximity to its star would prohibit life as we know it.
Proxima Centauri, the nearest red dim dwarf star just 4.2 light years from Earth, may have a second planet orbiting it, as per recent observations.
One of the brightest red dwarfs, K2-155 that is around 200 light years away from Earth, has three transiting super-Earths, which are slightly bigger than our own planet.
Astronomers have discovered a giant planet with an atmosphere and core dominated by carbon.