Perhaps the most interesting piece of news is that three of the seven planets are in the habitable zone of the star.
The TRAPPIST-1 star, an ultra-cool dwarf, has seven Earth-size planets orbiting it. Three of these planets lie firmly within the hospitable zone, and could therefore hold liquid water, a substance we believe to be essential for life.
Like previous exoplanets - or planets beyond Earth's solar system - TRAPPIST-1's satellites were spotted when astronomers saw the planets "transit" the star, blocking some of the light captured by telescopes.
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The study found that all seven planets are closer to their host star than Mercury is to our sun.
NASA said all the TRAPPIST-1 planets are likely rocky, but further observations are needed to determine whether they have any liquid water on their surfaces.
"This is the first time that so many planets of this kind are found around the same star", Michaël Gillon, lead study author, told CNN.
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Since Nasa has mentioned it is related to exoplanets, we at least know that the discovery is beyond our solar system.
In this system, some of the planets could be at the right temperature to have such things as oceans of water, based on the planets' distance from the dwarf star. The planets that orbit it are clustered more closely, and they probably only ever face Trappist-1 from one side. The word TRAPPIST is, in fact, an acronym for the Belgian-operated telescope located in Chile that was used to first spot two of these exoplanets in May of 2016.
The agency announced that it will make a major announcement on new findings on planets, but offered no other details. Upon standing on one exoplanet, you would see the next closest as clearly as we see the moon from Earth.
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