Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: A Cepheid is a star that varies in light intensity over regular, measurable periods. The period of pulsation is directly related to a Cepheid's intrinsic brightness making observations of these stars a powerful tool for determining distance.

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Keywords: 30 seconds or greater, animation, astronomy, beauty, cepheid variable, cepheid variable in spiral galaxy, color image, digital animation, digitally generated image, discovery, ethereal, exploration, film, galaxy, glowing, horizontal, infinity, majestic, mystery, no people, pulsating, satellite view, science, solar flare, space, spiral galaxy, star, star field, turning, zoom in

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Cepheid Variable in Spiral Galaxy

K001/0338 Rights Managed

Downloadable master

Duration: 00:00:30

Frame size: 1280x720

Frame rate: 30

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 400.5M

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Capture format: Digital Image Sequence

Codec: Photo - JPEG

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