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7 planets orbiting a red dwarf star may be made of similar stuff
Located about 40 light-years away, the red dwarf star, TRAPPIST-1 is home to the largest group of roughly Earth-size planets ever found in a single stellar system.
Washington: The seven rocky planets orbiting the the red dwarf star TRAPPIST-1 have remarkably similar densities, which provides clues about their composition.
Located about 40 light-years away, TRAPPIST-1 is home to the largest group of roughly Earth-size planets ever found in a single stellar system.
Previous calculations determined that the planets are roughly the size and mass of Earth and thus must also be rocky, or terrestrial as opposed to gas-dominated, like Jupiter and Saturn. ....

University Of Washington , United States , Eric Agol , Planetary Science Journal , Transiting Planets , Planetesimals Small Telescope , Spitzer Space Telescope , Earth Sized Planets , Trappist 1 , Red Dwarf Star , பல்கலைக்கழகம் ஆஃப் வாஷிங்டன் , ஒன்றுபட்டது மாநிலங்களில் , கிரகங்கள் அறிவியல் இதழ் , ஸ்பிட்சர் இடம் தொலைநோக்கி , பூமி அளவு கிரகங்கள் , சிவப்பு குள்ள நட்சத்திரம் ,