NOTS-EV-2 Caleb
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The NOTS-EV-2 Caleb, also known as NOTS-500, Hi-Hoe and SIP was an expendable launch system, which was later used as a sounding rocket and prototype anti-satellite weapon. It was developed by the Unit
Caleb launch vehicle on loading trolley
Caleb rocket mounted on F4D Skyray
Hi-Hoe rocket mounted on F4H Phantom II
A SIP rocket on San Nicolas Island in August 1961, prior to the first launch
Low Earth orbit
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A low Earth orbit is an orbit around Earth with a period of 128 minutes or less and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, peaking in number at an al
A view from the International Space Station, in a low Earth orbit (LEO) at about 400 km (250 mi), with yellow-green airglow visible at Earth's horizon, where roughly at an altitude of 100 km (62 mi) the boundary between Earth and outer space lies and flying speeds reach orbital velocities