Mae Carol Jemison
The first African-American woman in space
Martin George Jaenke
A pioneer in inertial rocket systems and analog computers
Alexei M. Isayev
Rocket engine designer, helped plan and manage the Soviet Space Program
James B. Irwin
Lunar Module pilot on the Apollo 15 lunar landing mission
Edwin P. Hubble
Through his use of the largest telescope of his time, the 100-inch reflector at the Mount Wilson Observatory, Dr. Edwin Hubble revolutionized man’s knowledge of the size, structure, and properties […]
John Houbolt
John Houbolt (1919-2014): As an engineer at both NASA and its predecessor, NACA, Houbolt made critical contributions to the Apollo Program. He developed the initial plan to use a ‘Lunar […]
Walter Hohmann
Published influential works on orbits, trajectories, and space ships
Hipparchus
Hipparchus was born in Nicaea, Bithynia (now Iznik, Turkey), circa 190 B.C. He spent much of his time in Rhodes, Greece. Very little is known about his life, but he […]
James P. Henry
James Paget Henry was born on July 12, 1914, in Leipzig, Germany. In the early 1930’s he immigrated to England, then in 1939, to the United States. He became a […]
Susan J. Helms
Susan J. Helms was born in Charlotte, North Carolina on February 26, 1958, but considers Portland, Oregon, to be her hometown. It was there that she attended Parkrose Senior High […]