Super Earth & 5 mini-Neptunes: Scientists discover 6-planet system in orbital harmony
Apr 20, 2020, 01:22 PM ISTScientists have discovered a six-planet system -- a "super-Earth" and five "mini-Neptunes" which display an exceptionally regular spacing, hinting at how the system may have formed. The planets revolving the star HD 158259 in the Draco constellation were found using the SOPHIE spectrograph.