Did you know that Jan Oort was born today in 1900? He was a Dutch astronomer and called one of the greatest astronomers of the 20th century. Among his many discoveries, Jan Oort verified that our Milky Way galaxy is rotating and showed that the stars towards the center move faster than those on the edge of the galaxy. He also discovered that our Sun is not the center of the Milky Way; it is about 30,000 light years from the center and takes about 225 million years to complete one orbit!
We hope that you have a galactically great day at school today. Remember to think kind thoughts, use kind words, and do kind things. We Love You.
The Kapteyn System, imagined that the galaxy was symmetrically distributed around the Sun. Oort’s discoveries overturned this system.
Jan Oort was also a pioneer in the science of radio astronomy.
Jan Oort also studied comets and was the first to find evidence of dark matter. He also found a ‘galactic halo’; a group of stars that orbits the Milky Way, but outside of the main disk of the galaxy.
The Oort Cloud, a region of beyond the orbit of Pluto and Neptune is named after Jan Oort as well as the Oort constants, and Asteroid 1691 Oort.