Editing Luna 3 (section)

== Design ==
The space probe was a cylindric canister with hemispheric ends and a wide flange near the top. The probe was {{convert|130|cm|in}} long and {{convert|12|cm|in}} at its maximum diameter at the flange. Most of the cylindric section was roughly {{convert|95|cm|in}} in diameter. The canister was hermetically sealed and pressurized to about {{convert|0.22|atm|kPa}}. Several [[solar cell]]s were mounted on the outside of the cylinder, and these provided [[electric power]] to the [[storage batteries]] inside the space probe.{{citation needed|date=January 2021}}

Shutters for thermal control were positioned along the cylinder and opened to expose a radiating surface when the internal temperature exceeded {{convert|25|C|K}}. The upper hemisphere of the probe held the covered opening for the cameras. Four [[antenna (radio)|antenna]]s protruded from the top of the probe and two from its bottom. Other scientific equipment was mounted on the outside, including [[micrometeoroid]] and [[cosmic ray]] detectors, and the Yenisey-2 imaging system. The gas jets for its [[attitude control system]] were mounted on the lower end of the spacecraft. Several [[photoelectric cell]]s helped maintain orientation with respect to the Sun and the Moon.{{citation needed|date=January 2021}}

There were no [[rocket motor]]s for course corrections.{{citation needed|date=January 2021}}

Its interior held the [[camera]]s and the [[photographic film]] processing system, [[radio transmitter]], [[storage batteries]], [[gyroscope|gyroscopic unit]]s, and circulating fans for temperature control. It was spin-stabilized for most of its flight, but its three-axis attitude control system was activated while taking photos. Luna 3 was radio-controlled from ground stations in the Soviet Union.{{citation needed|date=January 2021}}

The Soviet media called the spacecraft the Automatic Interplanetary Station.{{sfn|Siddiqi|2018|p=14}} The probe was renamed to ''Luna 3'' in 1963.{{sfn|Siddiqi|2018|p=16}}