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Press Release 08-021 - Video

Microlensing Technique of Discovering Planets

This animated clip shows how microlensing works by using the gravity of the near star (shown in the bottom left), and its orbiting planets as a lens, magnifying light from a background star. By studying how the complex patterns of magnified light change as the near star and the two planets of the planetary system move in front of the distant star (top right), we can determine the properties of the planets and their star.

Credit: KASI - CBNU - ARCSEC (KASI is the Korea Astronomy and Space Science Institute, CBNU is the Chungbuk National University, and ARCSEC is Astrophysical Research Center for the Structure and Evolution of the Cosmos.)

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