Space Rocket History Archive

On January 3 1962, “Gemini” became the official designation of the Mercury Mark II program. The name had been suggested by Alex  Nagy of NASA Headquarters because the twin stars Castor and Pollux in constellation Gemini (the Twins) seemed to him to symbolize the program’s two-man crew, its rendezvous mission, and its relation to Mercury. Coincidentally, the astronomical symbol (II) for Gemini, the...

“The main trouble with the Mercury capsule was that most system components were in the pilot’s cabin; and often, to pack them in this very confined space, they had to be stacked like a layer cake and components of one system had to be scattered about the craft to use all available space. This arrangement generated a maze of interconnecting wires, tubing, and mechanical linkages. To replace one mal...

This brings us to Project Gemini.  Gemini started after Apollo had begun, in part to answer a crucial question for Apollo. Was rendezvous and docking in orbit a feasible basis for a manned lunar landing mission?

Mariner 4’s primary objective was to conduct closeup scientific observations of Mars and to transmit these observations to Earth. Additional goals included performing field and particle measurements in interplanetary space, and providing experience and knowledge of engineering capabilities for interplanetary flights of long duration…

From the Control center Yuri Gagarin’s kept the crew informed on everything taking place on the now deserted launching site. Finally the command was given: “Stand by!” Now, It would be a matter or minutes before the launch. Commands followed in quick succession. The flight recorder was switched on, the engines started up. There was not much noise at first. But, after the command “Main Engine” the...

Premiere Khrushchev was not willing to wait until Soyuz for another space first.  Khrushchev believed, There could be no final victories in the race for space propaganda.  He knew the US was working on project Gemini which would carry two astronauts in 1965.  So, as a means to upstage the US, Khrushchev ordered Chief Designer Korolev to fit three cosmonauts into the Voskhod spacecraft that was des...

You may recall from episode 32 Ranger- 4 was the first  U.S. spacecraft to reach another celestial body. However, Ranger-4 failed it primary mission of returning pictures from the moon…

The Space Age had barely begun when Soviet engineers started planning ways to destroy enemy satellites. Some Western analysts have speculated that a design for an anti-satellite weapon system was started at Korolev’s OKB-1 bureau as early as 1956…

During re-entry plasma enveloped Vostok-6. Tereshkova saw pieces of burning material fly past her window and she also smelled smoke entering the cabin…

Vostok 5’s orbit turned out to be lower than the expected 181 by 235 km. The actual orbit was 175 by 222 km.  Initial calculations indicated the orbit of Vostok 5 would not decay for 10 or 11 days, however more conservative estimates, taking into account the increased solar activity and the resulting expanding of the upper atmosphere showed that the orbit could decay after only 8 days. With no way...

In June of 1963, the Soviet Union performed an encore of the Vostok 3 and 4 missions with two manned spaceships orbiting the Earth simultaneously. However, Vostok 5 and 6 was more than a simple repetition.  Vostok 5’s objective was to beat the flight-duration record. But Vostok-6 would carrying the first woman into space.  The 26 year old Valentina Tereshkova….

Geosynchronous satellites have the advantage of remaining permanently in the same area of the sky, as viewed from a particular location on Earth. Geostationary satellites have the special property of remaining permanently fixed in the exact same position in the sky at all times, meaning that ground-based antennas do not need to track them but can remain fixed in one direction…

Mercury-Atlas 9 was the fourth and final manned orbital flight of the Mercury program. The flight objectives were to: (1) evaluate the effects on the astronaut of approximately one day in orbital flight; (2) verify that man can function for an extended period in space as a primary operating system of the spacecraft; and, (3) evaluate in a manned one-day mission the combined performance of the astr...

During the summer of 1962 final preparations were underway for the first U.S. attempt to reach another planet.  The planet was Venus, Earth’s closest planetary neighbor.  This first flight would be accomplished by the JPL built Mariner 2 spacecraft…

After Scott Carpenter’s science heavy Mercury-Atlas 7 flight, Nasa’s next mission would concentrate on the technical and engineering aspects of space travel.  Mercury Atlas 8 became the third manned orbital flight of the Mercury program. The pilot selected was Walter M. Schirra, Jr., but most people called him Wally…

In February of 1962, the United States put John Glenn into orbit. This prompted Soviet leadership to suddenly asked Chief Designer Korolev to launch the next space spectacular promptly. To make this mission truly spectacular the Soviets decided to launch a group flight of two Vostoks lasting up to four days in orbit.  

After the successful completion of the Mercury-Atlas 6 flight that carried John Glenn into orbit, it was Scott Carpenter’s turn to pilot Mercury-Atlas 7, which he named Aurora 7.  The mission was essentially a repeat of John Glenn’s 3 orbit mission, except the focus of  this mission was on science. The full flight plan included the first study of liquids in weightlessness, Earth photography, star...

As part of the pre-Apollo preparations, NASA created the Ranger series of missions to take high-quality pictures of the Moon and transmit them back to Earth in real time…

Mercury Control was still undecided on the course of action to take with the heat shield problem. Some controllers thought the retrorocket pack should be jettisoned after retrofire, while other controllers thought the retro pack should be retained, as added assurance that the heat shield would stay in place…

“I am in a big mass of some very small particles, they’re brilliantly lit up like they’re luminescent. I never saw anything like it! They round a little: they’re coming by the capsule and they look like little stars. A whole shower of them coming by. They swirl around the capsule and go in front of the window and they’re all brilliantly lighted.”  John Glenn – Friendship 7

Following the successful suborbital missions of Allan Shepard and Gus Grissom, NASA believed the Mercury capsule was ready for an orbital mission.  But, there was a problem, the Redstone booster did not have the power to place the Mercury capsule into orbit.  The Atlas booster had the power to put the capsule in orbit but not the confidence of NASA.  By September of 1961 Four launches of the mercu...

After Alan Shepard and Gus Grissom’s suborbital flights and less than four months after Gagarin’s became the first man in space, the soviet union stunned the world with yet another manned mission.

Mercury-Redstone 4 was the fourth mission in the Mercury-Redstone series and the second U.S. manned suborbital spaceflight. The mission was essentially a repeat of Alan Shepard’s Freedom 7 flight.   So why was it necessary to launch another sub-orbital mission?  Why not proceed with an orbital flight to match the Soviet Vostok 1?  Among other things the U.S. needed more space experience to corrobo...

“We have been plunged into a race for the conquest of outer space. As a reason for this undertaking some look to the new and exciting scientific discoveries which are certain to be made. Others feel the challenge to transport man beyond frontiers he scarcely dared dream about until now. But at present the most impelling reason for our effort has been the international political situation which dem...

Over 52 years ago, in the early hours of May 5th, 1961 the US prepared to launch its first man into space. Three weeks earlier, the Soviet Union had sent Yuri Gagarin on an orbital mission. This was a suborbital mission planed to last only 15 minutes. For the moment that did not matter, the entire nation held its breath while Alan Shepard became America’s first man in space.