New estimates for planets in Trappist-1






Two exoplanets of the Trappist-1 star are likely to be ready for humans, according to new estimates by scientists.

This star, a faint red dwarf at 39 light years, was discovered last year and it has seven planets that are all about the size of the Earth. The event has since created great interest in the scientific community, as it is the first time that so many “terrestrial” planets have been found around the same star.

The new study, led by Amy Bar of the US Planetary Science Institute, to be published in the astronomy and astrophysics magazine, estimates on the basis of mathematical calculations that the Trappist-1 d and e planets are the most likely are habitable due to their mild temperatures and generally their most favorable climatic conditions.

Six of the seven planets probably have water in the form of liquid or ice. D is likely to be a water world, covered all by a global ocean, at a temperature of about 15 degrees Celsius. It’s cooler, with possible temperatures like Antarctica.

C is the most likely to have a solid rocky surface, but very little to no water.