|By ESO/M. Kornmesser (https://www.eso.org/public/images/eso1736a/) [CC BY 4.0 (http://creativecommons.org/licenses/by/4.0)], via Wikimedia Commons|
Eleven light years away, orbiting a small, faint red dwarf, is the Earth-like planet Ross 128 b. The star, Ross 128, is one of the quietest stars in the solar neighborhood and is located in the Virgo constellation. Most red dwarfs are prone to flaring, which can blast nearby planets with lots of radiation, stripping away their atmospheres and making them uninhabitable. But Ross 128 b doesn’t flare very often, which makes any planets in its habitable zone candidates for hosting life.
The planet was detected by the HARPS instrument at the La Silla Observatory in Chile. It is the second-closest known Earth-size exoplanet and is calculated to have a minimum mass of 1.35 times the Earth. Ross 128 b orbits 20 times closer to its star than Earth orbits the Sun, but intercepts only 1.38 times more solar radiation than Earth, increasing the chance of retaining an atmosphere.
It's year (rotation period) lasts about 9.9 days and is most likely tidally locked, meaning one side of the planet has eternal daylight and the other eternal darkness.
As of 2017, Ross 128 b is the best candidate for a potentially habitable exoplanet, if it has an atmosphere and if it has the right chemical balance for life to thrive.
Would its inhabitants be like us? Or wildly different? What do you imagine they're like?