Astronomers have discovered an Earth-size planet orbiting an ultracool red dwarf star similar in size to Jupiter. The red dwarf, located some 55 light-years away, is 100 times less bright than the ...
In January 1992, a revolution took place in the field of astronomy, with the discovery of the first exoplanets (a planet outside our solar system) confirmed around another star announced by Alexander ...
Gliese 12 b's estimated size may be as large as Earth or slightly smaller—comparable to Venus in our solar system. This artist's concept compares Earth with different possible Gliese 12 b ...