It might be 41 light years away, but NASA's James Webb Space Telescope (JWST) has discovered a exoplanet that is 99 per cent of Earth's diameter, further opening the door for the discovery of a planet like our own.
Christened LHS 475 b by the space agency, the exoplanet — any planet that exists outside our solar system — was detected by JWST's Near-Infrared Spectrograph (NIRSpec), which captured it easily, and clearly, with only two transit observations.
