scientistmary:This is what a sunset on the well-studied exoplanet HD 209458b, also known as Osiris
scientistmary: This is what a sunset on the well-studied exoplanet HD 209458b, also known as Osiris, would pretty much look like. The planet lies 150 light years away in the constellation of Pegasus, and is classified as a hot-Jupiter exoplanet. Why such colors? Osiris’s parent star is white, but when it passes through the concentration of sodium in the planet’s atmosphere, red light is absorbed, leaving behind the blue. But as the sun sets, the blue light is scattered in the same way on Earth, spawning the gradual change to green, and then to a dim dark green. The image was reconstructed by Frederic Pont of the University of Exeter using data from a camera on-board the Hubble Space Telescope. -- source link