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What exactly is the “sunbeam” in the Pale Blue Dot? Is it a real astronomical phenomenon or an imaging artifact?
by divbzero 1y ago
What exactly is the “sunbeam” in the Pale Blue Dot? Is it a real astronomical phenomenon or an imaging artifact?
- indoordin0saur 1y agoStanley Kubrick messed that one up and turned up one of the stage lights too high. EDIT: Guys... I'm kidding, c'mon.
- hydrogen7800 1y ago>the sunbeam in which Earth is suspended – isn’t a genuine feature of Earth’s position in the cosmos but an artefact of the image itself. Toward the end of the article.
- susam 1y agoThe "sunbeam" in Pale Blue Dot is imaging artefact indeed! From <https://www.nasa.gov/image-article/solar-system-portrait-earth-as-pale-blue-dot/ https://www.nasa.gov/image-article/solar-system-portrait-ear...>: "Coincidentally, Earth lies right in the center of one of the scattered light rays resulting from taking the image so close to the sun." See also <https://www.loc.gov/resource/mss85590.042/?sp=17 https://www.loc.gov/resource/mss85590.042/?sp=17>: "Because of the way that sunlight is scattered off the spacecraft, the Earth seems to be sitting in a beam of light, as if there were some special importance to our small planet. But this is just an accident of geometry and optics. The Sun emits its radiation equitably to all directions in space." Also, from the posted article itself: "Indeed, even the hint of perceptual salience – the sunbeam in which Earth is suspended – isn’t a genuine feature of Earth’s position in the cosmos but an artefact of the image itself."