Launched 17:13 local time. Reached 102.4 km. Carried cosmic and solar radiation, photo experiments for Applied Physics Lab, John Hopkins University.

NACA flight 16. Stability and loads investigation. Mach 0.89.

AF flight 27. Powered pilot-check flight.

Ustinov's requirement was to deliver a 3000 kg nuclear warhead over a 3000 km range (eg to reach the United Kingdom).

Gas composition research. Launched at 1412 local time. Reached 143 km.

At a press conference in Washington, D.C., NASA Administrator T. Keith Glennan announced the seven pilots had been selected for the Mercury program.

The R-9 launch went normally, from the launch pad adjacent to that from which Yuri Gagarin would be launched three days later, in view of the cosmonauts.

Missile Defense Alarm System.

In a meeting between the VVS and OKB-1 engineers, Korolev and Keldysh push for acceptance by the military and use of Vostok as the first 'space trainer'. Cosmonauts would train for spaceflight on Vostok missions before being assigned to operational flights aboard Soyuz.. This was consistent with aircraft practice (e.g. where the first effective jet fighter, the MiG-15, was converted to the MiG-15UTI and became the standard jet trainer for the VVS). It also envisioned a future where operational Vostok and Soyuz spacecraft would be mass-produced by the military and flown as regularly as fighter aircraft.

This Air Force conducted test program contributed significantly to the development of the Gemini launch vehicle; the Gemini malfunction detection system was tested on five flights, Gemini guidance components on three, and the longitudinal oscillation fix on four. In addition to flight testing these (and other) critical components, these flights also enhanced confidence in the use of the Titan II as a launch vehicle. Thirty-two Titan II test flights were analyzed to determine whether any characteristic of the flight would have demanded a Gemini abort; 22 were adjudged successful from the standpoint of a Gemini mission, nine would have required Gemini to abort, and one resulted in a prelaunch shutdown.

George E. Mueller, Associate Administrator for Manned Space Flight, announced the transfer of control over manned space flights from Cape Kennedy, Fla., to Houston, Texas. MSC's Mission Control Center would direct the flights from end of liftoff through recovery.

Launched at 1965 Croatan MRF Expedition LP36 - - Latitude: 44.25 S - Longitude: 77.67 W.

Launched at 1965 Croatan MRF Expedition LP37 - - Latitude: 44.38 S - Longitude: 77.78 W.

FU184 Technology (sea recovery) mission.

Development of systems for air defence and the control of outer space.

Area survey photo reconnaissance satellite.

All is ready for a flight in April, but the Communist Party resolution says the flight has to wait for May. The Soyuz ECS is designed to only operate for five days, but will have to operate 3 to 4 times longer for this mission. Various problems are identified and reviewed. Mishin wants to accept a carbon dioxide level in the cabin atmosphere double the percentage considered acceptable earlier. Plans are made for a quick flight of the crew after the long duration mission to Moscow for extensive physical examinations.

DOS-7K#1 will be ready on 19 April. The first crew is completely trained. During the day the engineers of the second and third crews train aboard the station. Afterwards the technicians fix the defects they have noted. The evening film is 'Beginning'. There are many high-level guests at Area 2. After the film the brass try out the training machines that will be used aboard the station - they tire quickly.

Geodynamics Experimental Ocean Satellite. The mission of GEOS 3 (Geodynamics Experimental Ocean Satellite) was to provide the stepping stone between the National Geodetic Satellite Program (NGSP) and the Earth and Ocean Physics Application Program. It provided data to refine the geodetic and geophysical results of the NGSP and served as a test for new systems. A major achievment was the flight of a radar altimeter. Further mission objectives: intercomparison of tracking systems, investigation of solid-earth dynamic phenomena through precision laser tracking, refinement of orbit determination techniques, determination of interdatum ties and gravity models, and support of the calibration and position determination of NASA Spaceflight Tracking and Data Network (STDN) S-band tracking stations.

Area survey photo reconnaissance satellite; returned film capsule.

Manned two crew. Docked with Salyut 6. Carried crew comprising L I Popov and V V Ryumin to the Salyut-6 station to carry out scientific and technical research and experiments.

Radar calibration mission.

STS-6 landed at 18:53 GMT.

High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission.

Carried SIR-C SAR radar. Payloads: Space Radar Laboratory (SRL) 1; Consortium for Materials Development in Space Com-plex Autonomous Payload (CONCAP) IV; three getaway special (GAS) payloads; Space Tissue Loss (STL) A, B; Visual Function Tester (VFT) 4; Shuttle Amateur Radio Experiment (SAREX) II.

Unmanned resupply vessel to Mir; carried GFZ-1 German sub-satellite to Mir. Docked with Mir on 11 Apr 1995 21:00:44 GMT. Undocked on 22 May 1995 23:42:37 GMT. Destroyed in reentry on 23 May 1995 03:27:52 GMT. Total free-flight time 2.22 days. Total docked time 41.11 days.

Covered Oko constellation planes 8/9 - 217 degree longitude of ascending node.

The Titan 4B placed the IUS upper stages and DSP-1 Block 14 ballistic missile launch detection satellite. payload into a 188 km x 718 km x 28.6 deg parking orbit. The first stage of the IUS burned at 18:14 GMT and put the second stage and payload into a geosynchronous transfer orbit. The IUS second stage fired at 23:34 GMT in order to place the spacecraft in geosynchronous orbit. However, at least one connector remained attached between the stages, and the second stage motor nozzle did not extend properly. When the stage fired, the vehicle tumbled wildly during the burn. Separation of the DSP was achieved. Although it could not perform its primary mission, it did provide a good test case in that the effects of radiation on its systems could be monitored as they underwent twice-daily passages of the Van Allen Radiation Belts. However after some weeks the hydrazine propellant aboard the satellite vented into space due to a broken fuel line. It was believed this had been induced by the wild ride aboard the IUS-2 stage.

Return to flight of Ariane 5G after grounded following Ariane 5EC-A failure. Launch delayed from February 24, April 8, 2003. Satellite also had meteorological instruments. As of 2007 Mar 10 located at 93.48E drifting at 0.009W degrees per day.

As of 2007 Mar 11 located at 125.09W drifting at 0.001W degrees per day.

Communications satellite with C, Ku and Ka band transponders.