Astronomers from the University of Exeter using the NASA/ESA Hubble Space Telescope along with an international team of researchers have, for the first time, determined the true colour of a planet orbiting another star.
If seen up close this planet, known as HD 189733b, would be a deep cobalt blue, reminiscent of Earth’s colour as seen from space.
But that’s where the similarities end. This deep blue dot is a huge gas giant orbiting very close to its host star. The planet’s atmosphere is scorching with a temperature of over 1000 degrees Celsius, and it rains glass, sideways, in howling 7000 kilometre-per-hour winds. (more…)