![]() “The compositions we infer also provide some optimism that large reservoirs of liquid water could persist over this time despite the possibly hostile magnetic and radiation environment in which the planets orbit very close to TRAPPIST-1.”Īccording to the research, the form of water on TRAPPIST-1 planets would depend on the amount of heat each planet receives from their star. “Our new results, which more precisely quantify the significant gravitational interactions between the planets, drive home the remarkable stability of this system,” explained Burgasser, professor and observational astrophysicist in the UC San Diego Department of Physics. ![]() The planets' densities, however, now known more precisely than before with data from NASA's Spitzer and Kepler space telescopes, suggest that some planets could hold up to five percent of their mass in water-equating to about 250 times more than the Earth's oceans. After the recent discovery and studies of a system of planets orbiting the ultracool dwarf star Trappist-1, a team of international astronomers, including the University of California San Diego’s Adam Burgasser, announced new information about the composition of the seven Earth-sized planets.Īccording to the new findings to be published in the journal Astronomy and Astrophysics, Trappist-1’s planetary system, dated to be 7.6 billion years old-older than our sun, is made mostly of rock.
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