Walter Cunningham is one of the prominent astronauts in American history. Although he's already retired, he's currently the chairman of the<em> Texas Aerospace Commission.</em>So, this makes him a Texas scientific leader.
Together with Schirra and Don Eisele, Cunningham helped created the first-ever live television transmission from space. It was broadcast from Apollo 7 <em>(October 1968)</em>, which was an<u> eleven-day flight</u> towards moon.
Jefferson's most significant accomplishment as president was the Louisiana Purchase. In 1803, he acquired land stretching from the Mississippi River to the Rocky Mountains from cash-strapped Napoleonic France for the bargain price of $15 million, thereby doubling the size of the nation in a single stroke.
