2. Length: 203 cm Weight: 13.9 k.g Diameter: 15 cm Launch Vehicle: Juno |

3.  Creator: William H. Pickering  Designer: James A. Van Allen  Builder-of-engine: Wernher Von Braun

4. On Jan. 20, 1958, technicians lowered the Explorer 1 satellite payload onto the launch vehicle's fourth-stage motor. The photo was taken in the gantry at Launch Complex 26, Patrick Air Force Base, Florida. Explorer 1 launched successfully on Jan. 31, 1958.

5.  March 16, 1926 Robert H. Goddard flies first successful liquid-fueled rocket.

6.  January 31, 1958 Explorer 1 becomes the first U.S. satellite to orbit around the Earth, discovering the Van Allen January 31, 1958

7.  October 1, 1958 NASA is born.  May 28, 1959 A Jupiter rocket launches Able, a rhesus monkey, and Miss Baker, a squirrel monkey, to become the first living beings to successfully return to Earth after traveling in space on a suborbital flight.

8. Where was Explorer 1 launched ?