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Readers ponder gravity wave physics

Reader feedback from the May 14, 2016, issue of Science News

4:13pm, May 4, 2016

Gaga for gravity waves

With a single chirp, scientists confirmed the existence of gravitational waves created by the collision of two black holes. Science News’ special report (SN: 3/5/16) and subsequent stories in the March 19 issue sparked a flurry of reader questions on the physics of gravitational waves.

Reader Peter Toot wondered if gravitational waves’ ability to bend spacetime stretches light waves. “It seems to me that the expansion and contraction effects of the waves on the [LIGO] detector and surroundings would also apply equally to the wavelength of the light beams used by the detector,” Toot wrote. “If so, it then

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