How would an Earth-like planet look in Alpha Centauri?

Enlarge / Artist’s impression of what an Earth-like planet might look like in a nearby star system. (credit: ESO/L. Calçada) We now know that our nearest neighbor, Proxima Centauri, is host to at least two planets. But we’re not sure if there are any planets near Alpha Centauri, a binary system just beyond that. If […]