streda 13. apríla 2005

Bledomodrá bodka

Zem je bledomodrá bodka strácajúca sa v lúčoch Slnka. Je vidieť v pravom pruhu slnečného svetla kúsok pod stredom obrázku.
Túto fotografiu spravil modul Voyager 1 pri svojom lete zo vzdialenosti 3.7 miliardy kilometrov od Zeme.


"Pale Blue Dot" is a photograph of the Earth taken by the Voyager 1 spacecraft at the range of 3.7 billion miles. It shows the Earth as minute speck nearly lost in the glare of the Sun.

This is the "Pale Blue Dot" photograph of the Earth taken by the Voyager 1 spacecraft. The Earth is the relatively bright speck of light about halfway down the rightmost sunbeam.

This narrow-angle color image of the Earth, dubbed 'Pale Blue Dot', is a part of the first ever 'portrait' of the solar system taken by Voyager 1. The spacecraft acquired a total of 60 frames for a mosaic of the solar system from a distance of more than 4 billion miles from Earth and about 32 degrees above the ecliptic. From Voyager's great distance Earth is a mere point of light, less than the size of a picture element even in the narrow-angle camera. Earth was a crescent only 0.12 pixel in size. Coincidentally, Earth lies right in the center of one of the scattered light rays resulting from taking the image so close to the sun. This blown-up image of the Earth was taken through three color filters -- violet, blue and green -- and recombined to produce the color image. The background features in the image are artifacts resulting from the magnification.


[Carl Sagan: Pale blue dot: A vision of the human future in space]

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