Mercury-like exoplanet with surface temp of 2,000ÂºC found
An international team of astronomers has detected a metallic exoplanet with a density similar to Mercury 339 light-years away from Earth. Having a dayside temperature of over 2,000Â°C, K2-229b is 20% larger than Earth but is 2.6 times more massive. The discovery was made using NASA's Kepler Space Telescope by observing Doppler shifts in the spectrum of its host star.