Quadruple Star System
If binary stars with planets aren’t your thing, why not try quadruple-star-systems with planets? In October, NASA announced the discovery of PH1, a planet found using Kepler data -- but not by astronomers. Instead, a citizen science group called Planet Hunters used thousands of eyes from volunteers to scan Kepler’s transit lines. These productive amateurs determined that PH1 was a Neptune-size planet that orbits its two host stars every 137 days. The double parent stars were in turn orbited by a second binary stellar system.
Image: Haven Giguere/Yale