On this day in 1918 - August 26th - Katherine Coleman Goble Johnson was born.
Katherine Johnson is an African-American mathematician whose calculations of orbital mechanics as a NASA employee were critical to the success of the first and subsequent U.S. manned spaceflights. She celebrated her 100th birthday this year.
On this day in 1745 - August 30th - German astronomer Johann Hieronymus SchrÃ¶ter was born.
He built his own observatory and devoted himself primarily to solar and planetary astronomy. His two volumes on lunar topography reached levels of detail that were to remain unsurpassed for many years.
On this day in 1913 - August 31st - English radio astronomer Bernard Lovell was born.
Lovell was a pioneer of radio astronomy and founded the Jodrell Bank Observatory in Cheshire, England in 1945. When the telescope was built there - later named the Lovell Telescope - it was for many years the largest steerable radio telescope in the world.