They have interest researchers since 2017 when it was discovered that three of the seven planets are located in the theoretical "habitable zone".
The beam produced would be strong and distinguishable from the Sun’s light to alien astronomers.
NASA's Spitzer Telescope is the youngest member of the Great Observatory programme.
The form that water would take on TRAPPIST-1 planets would depend on the amount of heat they receive from their star.
New research claims that TRAPPIST-1 solar system has two planets in the same position as Earth and Mars
Researchers pinpoint the third and fourth Earth-like exo-planets out of the seven called TRAPPIST-1d and TRAPPIST-1e in the TRAPPIST-1 solar system.
Year in review: A comprehensive guide to everything that happened in the fields of space and astronomy in 2017
2017 was a great year for anyone interested in space and astronomy featuring several groundbreaking discoveries and heart-wrenching goodbyes
The outer Earth-sized planets orbiting the nearby dwarf star TRAPPIST-1 might still harbour substantial amounts of water, suggest results of a new study.
The TRAPPIST-1 system is between 5.4 billion and 9.8 billion years old. Our solar system is 4.5 billion years old.
The repeating pattern of transits used to discover the planets in the TRAPPIST-1 system has been translated into a melody.
A team of astronomers has claimed to have picked up "strange signals" emanating from a star 11 light years away.
If the star were to be any smaller, it is believed that the pressure would be too much to allow for the fusion of hydrogen nuclei into helium.
Frequent solar flares from the host star could be a problem as far as habitability of the exoplanets in orbit around red dwarf stars are concerned.
Because the planet is tidally locked to its star, one side of the planet is always facing toward the star, and one side is in perpetual darkness.
The planets are locked in an orbital resonance, each gravitationally tugging the next planet, and keeping it in place.
Nasa has now made the unprocessed data from a sustained observation campaign of the Trappist-1 system by Kepler available to the scientific community.
Astronomers believe that Nasa's upcoming James Webb space telescope could help us find out if any of the seven earth-sized planets around the Trappist-1 star 40 light years away could possibly support life.
ANU researchers have found out that planetary systems around distant stars are shaped like our own solar system.
Nasa's discovery of 7 earth-sized exoplanets is a significant step in the search for alien lifeforms
In a remarkable step towards answering the question "Are we alone in the universe", astronomers have spotted a nearby star with seven Earth-size planets.
Following the announcement of the discovery of Earth sized exoplanets, Nasa scientists responded to questions in a Reddit Ask Me Anything (AMA) thread.
Nasa's Spitzer Space Telescope has found seven earth like exoplanets in orbit around a single ultracool white dwarf star.