This is an artist's illustration of the super-hot exoplanet WASP-79b, located 780 light-years away. The planet orbits precariously close to a star that is much hotter than our Sun. The planet is larger than Jupiter, and its very deep, hazy atmosphere sizzles at 3,000 degrees Fahrenheit – the temperature of molten glass. The Hubble Space Telescope and other observatories measured how starlight is filtered through the planet's atmosphere, allowing for its chemical composition to be analyzed. Hubble has detected the presence of water vapor.
