Hubble Telescope investigates nearby exoplanet, finds it's Earth-size The rocky exoplanet LTT 1445Ac, located about 22.5 light years away, has been observed transiting its star by the Hubble Space Telescope. https://cdn.mos.cms.futurecdn.net/4xVTryRg9peqQQz7iv47fW.png https://www.space.com/hubble-telescope-earth-size-exoplanet-transit