An 'absolutely phenomenal' discovery hints 4 Earth-size planets may orbit the closest sun to our own

Shutterstock Astronomers have detected what may be four roughly Earth-size planets orbiting Tau Ceti, the nearest sun-like star. Two of the worlds appear to orbit within Tau Ceti's habitable zone, though a cloud of debris and asteroids may pose a threat to any life on them. If the result is confirmed, independent astronomers say it would be "astonishing. Astronomers may have just hit a crucial milestone in the search for other Earth-like planets. Scientists from the University of Hertfordshire a...