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8. Charles Pete Conradastronautastronaut who walked on moon on the Apollo XII mission in 1969 (third man to walk on the moon); space commander of Gemini XI, setting a world record in highest achieved altitude.
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Three aerospike nozzles achieved good altitude compensation capacities in the tests and still had better performance at off-design altitudes compared with that of the bell-shaped nozzle.
Known as "Joao do Pulo" (Jumping John), he followed in the hops, steps and jumps of Brazil's great triple jumpers, and joined them in the record books with a distance of 17.89 metres, achieved at altitude in Mexico City in the Pan American Games of 1975.
Earning the Silver Badge shows that a glider pilot has achieved an altitude gain of at least 1000 m, made a five-hour duration flight, and has flown cross-country for a straight-line distance of at least 50 km: these three attainments are usually, but not invariably, achieved in separate flights.
Beginning with the 18th century, ballooning has continually achieved higher altitudes.
37 38 These paradigms can be achieved with natural altitude, simulated altitude or a combination, 39 but it is important to note that the physiological responses to natural and simulated altitude may be quite different and controversy still exists as to what is the most efficient hypoxic exposure.
A Virgin Galactic rocket plane has reached the edge of space, the first US commercial human flight to achieve an altitude of more than 50 miles since the shuttle program ended in 2011.
Over-the-horizon radar systems are capable of localizing targets in range and azimuth but are unable to achieve reliable altitude estimation.
Other orientations are possible, such as the "80 Jump" takeoff which uses nacelles at 80° to quickly achieve high altitude and speed.
The robotic craft is fully autonomous and apparently achieved a maximum altitude of 96m during experimental flights in 2005.
By contrast even the comparatively primitive two-person Gemini spacecraft of the mid-60s achieved a maximum altitude of 850 miles — more than twice as high.
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