William Harwell created an attachment for the arm of the shuttle. This apparatus is used to capture satellites. Tweet

Inventor and physicist, Dr. George Carruthers helped to invent the lunar surface ultraviolet cameras. Tweet

T.J. Boyd was the first inventor to create and apparatus for detaching horses from carriages. He received a patent for his invention in 1872. Tweet

Victor Blanco was the mayor of San Antonio in 1809. This was when Texas was still a part of Mexico, and slavery wasn’t yet abolished. Tweet

In 1823, Alexander Lucius Twilight became the first African American to receive a college degree. He earned a bachelor’s degree from Middlebury College. [SIDEBAR: In less than 200 years of “higher” education, look how far African-Americans have come in the corrupted & bias “educational” system. NEVER believe the stereotype that African-Americans don’t value education!] Tweet

A. W. Martin invented the door lock. Tweet

Harry C. Hopkins invented a device that enhanced the hearing aid. Tweet

Elbert Frank Cox was the first African-American to earn a doctorate degree in mathematics. He received his degree from Cornell University in 1925. Tweet

Despite being dyslexic, Octavia Butler became an award-winning, world-renowed science-fiction writer. Tweet