Trappist-1: the system with Earth’s seven sisters.

dwarf-star-839294NASA Scientists have just announced the discovery of a new planetary system beyond the solar system. Since the discovery of the first one in 1995, astronomers have found more than 3500 planets out the solar system.
However, the discovery that Michael Gillon and his team announced today is a very special one. Trappist-1 is a system with at least 7 earth-sized planets orbiting nearby an Ultra-Cool Dwarf Star.

exoplanet-1-839293 In addition, three of them are in a zone that scientists define “habitable zone”. Therefore, we have three possible candidates in Trappist-1.
But, what is that makes a planet a habitable world?
In order to be habitable, a planet needs to be at the right distance from its star, with the right mass and atmosphere. Moreover, it needs the right amount of liquid water on its surface. Thomas Zurbuchen, associate administrator of the Science Mission Directorate at NASA Headquarters in Washington, said:“The discovery gives us a hint that finding a second earth is not just a matter of if but when”. So, the journey has just begun!

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Mirella Orsi

Mirella Orsi

I am a Science Writer and communicator with a background in Pharmaceutical chemistry. My portfolio covers all aspects of the communication in science from the writing to the science outreach.I have a proven track record in print and online journalism. I have written Science Caffè, Migrant Woman and LondraItalia. I am a contributor for Italoeuropeo and for other publications in Italy and in UK.In addition; I work as a broadcast journalist for LondonOneRadio covering seminars, awards and science festivals. I am a member of the Association of the British writers (ABSW).

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