Kosmos 2 (Russian: Космос 2 meaning Cosmos 2), also known as 1MS No.1 and occasionally in the West as Sputnik 12 was a technology demonstration and a scientific research satellite launched by the Soviet Union in 1962.

It was the second satellite to be designated under the Kosmos system, and the first spacecraft to be launched as part of the MS programme.

Its primary missions were to develop systems for future satellites, and to record data about cosmic rays and radiation.

The launch was conducted from Mayak-2 at Kapustin Yar, and occurred at 17:16:00 GMT on 6 April 1962.

[5] Kosmos 2 was placed into a low Earth orbit with a perigee of 215 kilometres (134 mi), an apogee of 1,488 kilometres (925 mi), an inclination of 49.0°, and an orbital period of 102.5 minutes.