But it will be a disappointment for alien hunters as it says the area may not be able to hold life after all.
The new research concludes that intense radiation from their star would have likely ravaged all three of the planets in the “habitable zone”.
This is where liquid water could exist on a planet’s surface.
Avi Loeb, co-author of the study, said: “Because of the onslaught by the star’s radiation, our results suggest the atmosphere on planets in the Trappist-1 system would largely be destroyed.
“This would hurt the chances of life forming or persisting.”
This comes as a conspiracy theory claimed Trappist-1 was heralding the coming Messiah.
More than 40,000 Americans have taken out insurance against being abducted by aliens.
“The atmosphere on planets in the Trappist-1 system would largely be destroyed”
Loeb chairs Harvard’s astronomy department and who also works at the Harvard-Smithsonian Centre for Astrophysics.
The three Earth-size planets were discovered by scientists in May last year.
They circle red dwarf star Trappist-1 – 39 light years from Earth.
But Loeb said despite the planets maybe having water they are too close to the sun to support life due to radiation.
The most far-flung Trappist-1 world orbits a 5.6 million miles from the star.
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While the closest planet in our solar system, Mercury, lies 36 million miles from the sun.
The study, published in the International Journal of Astrobiology, is a set back for the search for alien life in the universe.
Loeb added: “Earth-sized planets in the Habitable Zone around M-dwarfs are presumably much less likely to be habitable, conceivably by several orders of magnitude, when compared with the Earth-sun system.”