News in brief: Possible planet looks habitable

Candidate body pushes limit of astronomical detection

By Alexandra Witze, 13:23 PM December 19, 2012

The closest single star like the sun — Tau Ceti, 12 light-years away — may harbor five planets slightly more massive than Earth. One may even lie in the star’s habitable zone.

Mikko Tuomi, of the University of Hertfordshire in England, and his colleagues examined data taken by telescopes in Chile, Hawaii and Australia that looks for wobbles in a star’s movement that could be due to planets’ gravitational tug. Tuomi’s team ran statistical analyses to tease out possible planetary signals from...

Source URL: