Apparently, the main event of our time will be the discovery of an exoplanet, which, without additional terraforming, will be able to accept earthly colonists. Due to poor equipment, astronomers can only roughly draw pictures of the planets located in the so-called habitable zones.
Recently, several articles have been published at once about the discovery of the Earth's twin. But is it really so?
A number of scientists actually estimate the planet's habitability index as high as 95%, which is the highest among other known exoplanets (after Earth).
But at the same time, different models indicate that the conditions of the planet Teegarden are only 60% similar to those on Earth.
It is likely that the planet has liquid water, as well as relatively moderate temperatures on the surface.
The planet revolves around the red dwarf and the orbit is so close to the star that Teegarden makes a complete revolution around the star in just 5 Earth days. In fact, the planet is located closer to the star than Mercury is to the Sun. But due to the weak luminosity of the star, this is the norm.
Teegarden's star is so small and dim that it could de facto be recognized as a brown dwarf (the boundary state between a dim star and a planet).
But the planet, in addition to obvious pluses, has minuses. The planet has one side facing the star, which creates extremely powerful tidal connections on the planet. Also on the planet, most likely one part of the surface is very hot, while the opposite is an icy hell. If there are relatively stable potential residential zones, they are narrow strips located on the borders of the illuminated and dark sides.
Astronomers have been unable to detect the Van Allen Radiation Belt on the exoplanet, making the planet an extremely unpleasant place to potentially inhabit. If there really is no Van Allen radiation belt, then cosmic radiation makes this planet an extremely inhospitable place for life.