For the first time, scientists have found a rocky planet with an atmosphere orbiting in a star’s habitable zone. Researchers from Harvard University say the Earth-like world has conditions similar to those on Earth.
The exoplanet, LHS 1140 b, is 48 light-years from Earth. It orbits a red dwarf star at a distance close enough for water to remain liquid, but far enough away that it would not boil.
Isn’t space expanding as well, and faster than light too? So it ought to be even more than 20.
The universe is. The above measurements are for the observable universe, which is how much we can see from earth.