Exoplanets in the Trappist-1 system more likely to be habitable than scientists once thought, study suggests

[Admin]

Exoplanets in the habitable zone of the Trappist-1 star, some 40 light-years away from Earth, are more likely to have liquid water than researchers previously thought, according to a new study.

Exoplanets in the Trappist-1 system more likely to be habitable than scientists once thought, study suggests : Read more

 

[rod]

Models will need to be validated using real world measurements of TRAPPIST-1, 7 exoplanet system. Here is another report based upon observations of class M and K stars indicating destructive magnetic field activities.

The powerful winds of super magnetic stars could destroy the possibility for life on their exoplanets, https://forums.space.com/threads/th...ssibility-for-life-on-their-exoplanets.62615/

 

[Helio]

The article mentions that red dwarfs are hotter in their early years. This isn't true of G-class stars, like the Sun. So is this true for all highly convective stars?

 

[vagor]

Couple considerations that may have been missing here:
- How old is Trappist-1 system? Being Red dwarf, it may have formed during the early epoch of the universe. In this case its metallicity may be too low to form all elements needed for life. However, it does have planetary system suggesting that there are some metals available.
- If Trappist age is many billions of years, then water may have recycled during its lifetime. Initially during hot period it may have been blown away by solar winds, but later formed icy comets on the outskirts of the system that later may have been captured by inner planets, including located in Goldilocke zone.

 

[rod]

http://exoplanet.eu/catalog/trappist-1_b/, the ages or age of the parent star posted at this exoplanet site. 7.6 Gyr.