Sputnik 2 was a 4-meter (13 foot) high cone-shaped capsule with a base diameter of 2 meters (6.6 feet). It contained several compartments for radio transmitters, a telemetry system, a programming unit, a regeneration and temperature control system for the cabin, and scientific instruments. A separate sealed cabin contained the dog Laika. The pressurized cabin on Sputnik 2 allowed enough room for her to lie down or stand and was padded. An air regeneration system provided oxygen; food and water were dispensed in a gelatinized form. Laika was fitted with a harness, a bag to collect waste, and electrodes to monitor vital signs.
|Hand-sketch of Laika on plain cover with a special postmark to commemorate Sputnik 2 orbital decay and atmospheric re-entry after approximately 2000 Earth orbits.|
|A set of four stamps with the same design but different denominations were issued for Sputnik 2. This cover was affixed with a Sputnik-2 stamp.|