programs, Walker became the first person to fly to space twice. He was the only X-15 pilot to fly above 100 km during the program. Walker died in a group...

U.S. Agent (John Walker) is a character appearing in American comic books published by Marvel Comics, usually those starring Captain America and the Avengers...

The Friedmann–Lemaître–Robertson–Walker metric (FLRW; /ˈfriːdmən ləˈmɛtrə ... /) is a metric based on an exact solution of the Einstein field equations...

The Warner Revolution II, also marketed as the Space Walker II, is an American homebuilt aircraft that was designed and produced by Warner Aerocraft of...

Space Exploration Technologies Corporation, commonly referred to as SpaceX, is an American spacecraft manufacturer, launch service provider and satellite...

Warner Space Walker or Spacewalker may refer to: Warner Space Walker I, a single-seat American homebuilt aircraft Warner Space Walker II, a two-seat American...

Dandy–Walker malformation (DWM), also known as Dandy–Walker syndrome (DWS), is a rare congenital brain malformation in which the part joining the two...

Arizona State University (ASU). In 2013, Walker became an assistant professor at the School of Earth and Space Exploration as well as the Beyond Center...

the Bible, Volume II (Doubleday) Opus 100 (Houghton Mifflin) ABC's of Space† (Walker) Great Ideas of Science (Houghton Mifflin) The Solar System and Back...

Charles David "Charlie" Walker (born August 29, 1948) is an American engineer and astronaut who flew on three Space Shuttle missions in 1984 and 1985...