Discovering two 'super-Earths' only 12 light-years away can hide life

Astronomers have discovered two planets (denoted e and f) belonging to a star Tau Ceti, 12 light-years from Earth and can hide life.

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Tau Ceti is a star of the constellation of Venus, whose spectrum is similar to the Sun but has a smaller weight (only 78% of the Sun). Because Tau Ceti has similarities with the Sun (Tau Ceti is like the Sun in size and brightness), it becomes the number one target for alien life search (SETI).

Using telescopes in the Southern European Observatory (located in Chile) and the Keck Observatory (Mauna Kea, Hawaii), British scientists discovered four planets of equal size. Land in the "habitable zone" Goldilocks of Tau Ceti (the area is not too hot or too cold for water to exist in liquid form).

In particular, the two planets are denoted by e and f not only located near the center of the living area, which is similar in size to the Earth but can also exist.

Tau Ceti is like the Sun in size and brightness.(Photo Telegraph.co.uk.)

Scientists have used the "vibration" method (Wobble), a new research method that makes it easier for researchers to distinguish the light signals of planets and star activity, to measure images. Effect of gravity interaction on these planets.

Dr Fabo Feng from the University of Hertfordshire (UK), who led the study, said: "The weak vibration method is a historical milestone in finding planets similar to Earth."

Position the starTau Ceti in the sky.(Photo Fabo Feng, University of Hertfordshire.)

This new discovery is published on the Astronomical Journal.