A six-planet system dances in time to the tune of gravity

Astronomers have found a remarkable solar system, a system of planets orbiting a nearby star. For one thing, there are at least six planets found there. For another, the outer five planets are orbiting the star in synch, moving like dancers to the tune of gravity!

The star is called TOI-178, and it's a hair over 200 light years from Earth. TOI stands for TESS Object of Interest, a star with candidate planets detected by the Transiting Exoplanet Survey Satellite (making TOI an abbreviation with ...