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Radio astronomers measure star's wobble, find Saturn-size exoplanet

1 month ago   |   By Astronomy Now

An artist's impression of a newly discovered Saturn-class exoplanet orbiting a cool dwarf star. The planet was discovered by measuring slight changes in the star's position caused by the companion's gravity. Image: Luis A. Curiel Ramirez
After a year and a half making careful observations of a cool dwarf star 35 light years from Earth, coupled with previous observations dating back to 2010, astronomers using the continent-size Very Long Baseline Array radio telescope managed to tease out the presence of an unseen Saturn-size exoplanet.
The discovery is the first by a radio telescope...
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