Exoplanet Kelt-9b is three times the size of Jupiter and only half as dense, is the hottest planet ever found and orbits its star, Kelt, every 36 hours.
Its temperatures can reach a peak of 4,327°C (7,820°F), making iron and titanium glow.
Above, an artist’s impression of planet Kelt-9b orbiting its host star, Kelt. Credit: NASA/JPL-Caltech
Astronomers published their findings about the exoplanet that is 30 times closer to its star than the Earth is to the sun, in the journal Nature.
Kelt-9b is a gas giant 2.8 times more massive than Jupiter, but only half as dense. Credit: NASA/JPL-Caltech