Althea Gibson was the first African-American tennis player to compete at the U.S. National Championships in 1950, and the first black player to compete at Wimbledon in 1951. She also broke racial barriers in professional golf.
President of Israel Shimon Peres was also twice prime minister of Israel and won a Nobel Peace Prize for negotiating the Oslo Accords with Israeli Prime Minister Yitzhak Rabin and Palestinian leader Yasser Arafat.
Astronomer Edwin Hubble revolutionized the field of astrophysics. His research helped prove that the universe is expanding, and he created a classification system for galaxies that has been used for several decades.