Image of the Day: Sunset on Osiris (Exo-Planet HD209458b)
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May 02, 2013

Image of the Day: Sunset on Osiris (Exo-Planet HD209458b)

 

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The amazing image above of a sunset on exo-planet HD209458b 150 light years away, was reconstructed by Frederic Pont of the University of Exeter using data from a camera onboard the Hubble Space Telescope. Pont used his knowledge of how the color of light changes based on chemicals it encounters, and computer modeling, to create an actual image of what a sunset on the actual planet would look like.

The large exo planet in question, exoplanet HD209458b, nicknamed Osiris, circles its star rather closely. At certain points, when the planet passes between us and its star, the light from that star passes through Osiris’s atmosphere before reaching us, which allowed Pont to determine the chemical composition of the atmosphere and deduce what colors would appear to the naked human eye.

The light from Osiris’s star is white, like our own sun, but when it passes through the sodium in Osirisi’s atmosphere, red light in it is absorbed, leaving the starlight to appear blue. But as the sun sets, the blue light is scattered in the same way as it is here on Earth (Rayleigh scattering) causing a gradual change to green, and then to a dim dark green. And finally, due to diffraction, the bottom of the image becomes slightly flattened.


The Daily Galaxy via Hubble/ESA and Frederic Pont

Comments

So this is what the Osirisian MantaHawk would see as the star set!

Great image!

Yes, what can you tell me about the comet ISON and its coming destruction? Is it going to hit the earth? or the sun? or is the tail going o hit our magnetics sphere? It is all prophecied int he christian bible of the 26,000 year cycle and the cleansing of the eath so the New Earth can come about without seas!
Thank you kindly! Have a blessed day!


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