Astronomers have used two different exoplanet-detecting satellites to solve a cosmic mystery and reveal a rare family of six planets located about 100 light-years from Earth...The six exoplanets orbit a bright star similar to the sun named HD110067, which is located in the Coma Berenices constellation in the northern sky. Larger than Earth but smaller than Neptune, the planets are in a little-understood class called sub-Neptunes commonly found orbiting sunlike stars in the Milky Way. And the planets, labeled b through g, revolve around the star in a celestial dance known as orbital resonance...For every six orbits completed by planet...