Light-travel-time Effect Finds New Astronomical Applications

(Before It's News)

Io and Jupiter as seen by New Horizons during its 2008 flyby. (Credit: NASA/Johns Hopkins University APL/SWRI).

Sometimes the tried and true methods are still the best, even in observational astronomy. Researchers at the University of Prague demonstrated this recently in a study of the eclipsing binary system V994 Herculis (V994 Her).

Researchers P. Zasche and R. Uhla used a method known as the Light-travel-time Effect to verify that V994 Her is actually a double binary. If that method sounds familiar to any astronomy historians out there, that’s because it was first used by 17^th century astronomers to gauge the speed of light.
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© David Dickinson for Universe Today, 2013. |
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Post tags: backyard science, io jupiter, observing Jupiter’s moons, romer, speed of light, v994 her

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