Astronomy Picture of the Day

Andromeda Station
Composite Image Credit & Copyright: Ralf Rohner

Explanation: This surreal picture isn’t from a special effects sci-fi movie. It is a digital composite of frames of the real Andromeda Galaxy, also known as M31, rising over a real mountain. Exposures tracking the galaxy and background stars have been digitally combined with separate exposures of the foreground terrain. All background and foreground exposures were made back to back with the same camera and telephoto lens on the same night from the same location. In the “Deepscape” combination they produce a stunning image that reveals a range of brightness and color that your eye can’t quite see on its own. Still, it does look like you could ride a cable car up this mountain and get off at the station right next to Andromeda. But at 2.5 million light-years from Earth the big beautiful spiral galaxy really is a little out of reach as a destination. Don’t worry, though. Just wait 5 billion years and the Andromeda Galaxy will come to you. This Andromeda Station is better known as Weisshorn, the highest peak of the ski area in Arosa, Switzerland.

Tomorrow’s picture: a little drop of galaxy

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