We know exoplanets are out there, outside our solar system and spaced-based telescopes help us prove it. But to spot a Double-sized Earth with a ground telescope is a first. This is what astronomers in a remote Canary Island succeeded this week. It might be just blind luck, but it also may be a new way of making acquaintance with new Earth-like exoplanets.
The Double Earth-sized exoplanet was caught as it was crossing a star by The Nordic Optical Telescope in La Palma, one of the Canary Islands. This marks the first time when such a planet is detected by a telescope based on the ground.