"Eighteenth-century mathematician and astronomer Benjamin Banneker was widely known and respected in his time. Most of what he knew, he taught himself. His letter to Thomas Jefferson asked the future president to reconsider his racial prejudices. Learn about Banneker, who abolitionists would use as proof that people of any race can be equally intelligent. Additional features include detailed captions and sidebars, critical-thinking questions, a phonetic...

Profiles four women who have been integral to NASA's space program, helping to develop the Hubble Space Telescope, create computer code to send spacecraft to the moon, and work onboard the space shuttle.

Maria Mitchell's curiosity about the night sky led her to spend hours studying the stars. She discovered a comet as a young woman, winning an award from the King of Denmark for being the first person to discover a new comet using a telescope. Now famous as "the lady astronomer," Maria went on to become a professional astronomer, an unheard of achievement for a woman in the 19th century. She was the first woman to get any kind of government job when...