. On this day in 1919 – August 12th – Anglo-American astronomer Margaret Burbidge (nee Peachey) was born in Cheshire, England.
She made notable contributions to the theory of quasars, and to measurements of the rotation and masses of galaxies. Burbidge was also the lead author on a groundbreaking paper describing how chemical elements are formed in the depths of stars through nuclear fusion. She was the first woman director of the Royal Greenwich Observatory and the first woman to be president of the American Astronomical Society.
. On this day in 2018 – August 12th – NASA's Parker Solar Probe (PSP) was launched.
Its mission is to observe and probe the Sun's outer corona. At closest approach, Parker Solar Probe will be hurtling around the Sun at approximately 430,000 miles per hour! That's fast enough to get from Philadelphia to Washington, D.C., in one second.
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