The
May 9 transit of the sun by the planet Mercury was an astronomical
wonder. The rare celestial event, which happens only 13 times a century,
also provided an excellent scientific opportunity to study certain
aspects of our solar system’s smallest planet. During a live, one-hour
program on NASA TV, NASA science experts representing planetary,
heliophysics and astrophysics discussed the science behind the Mercury
transit as the phenomenon was occurring, and answered questions from the
agency’s social media followers.
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