Tau Ceti’s planetary quintet – reported in an online paper that will appear in Astronomy and Astrophysics – was found in existing planet-hunting data.
The study’s refined methods of sifting through data should help find even more far-flung worlds.
The star now joins Alpha Centauri as a nearby star known to host planets.
In both those cases, the planets were found not by spying them through a telescope but rather by measuring the subtle effects they have on their host stars’ light.
CONTINUED at BBC News.