On this day in 1512 - March 5th - Gerardus Mercator was born.
Mercator was a German-Flemish cartographer, geographer and cosmographer. He created the 1569 world map based on a new projection that represented sailing courses of constant bearing as straight lines - an innovation that is still employed in nautical charts.
On this day in 1787 - March 6th - Joseph Fraunhofer was born.
Fraunhofer was a German optician who was known for the quality of his optical glass and excellent telescope objectives. His name is still known today for his discovery of the dark absorption lines - known as Fraunhofer lines - in the Sun's spectrum.
Son of the discoverer of Uranus, John Herschel was one of the 19th century's most distinguished individuals. He was a brilliant mathematician, chemist and astronomer, as well as an accomplished artist, musician and linguist.
On this day in 1837 - March 7th - Henry Draper was born.
Henry Draper was a pioneer of astrophotography. Following his early death, his wife Anna donated money to Harvard College Observatory to complete his catalogue of stellar spectra. If you see a deep sky object named with an "HD" prefix, it refers to this catalogue.
We take forum safety very seriously here at BellaOnline. Please be sure to read through our Forum Guidelines. Let us know if you have any questions or comments!