Krasnaya Zvezda State Enterprise (GP Krasnaya Zvezda, ГП Красная звезда, meaning Red Star) is a Russian state enterprise that research and produce nuclear power

Nuclear power

Nuclear power is the use of sustained nuclear fission to generate heat and electricity. Nuclear power plants provide about 6% of the world's energy and 13–14% of the world's electricity, with the U.S., France, and Japan together accounting for about 50% of nuclear generated electricity...

 systems for spacecraft

Spacecraft

A spacecraft or spaceship is a craft or machine designed for spaceflight. Spacecraft are used for a variety of purposes, including communications, earth observation, meteorology, navigation, planetary exploration and transportation of humans and cargo....

. It was established in 1972, is located in Moscow and is subordinated to Rosatom.

Krasnaya Zvezda developed the Bouk (Buk) and TOPAZ

Topaz Nuclear Reactor

The TOPAZ nuclear reactor is a lightweight nuclear reactor developed for long term space use by the Soviet Union. Cooled by liquid metal, it uses a high-temperature moderator containing hydrogen and highly enriched fuel and produces electricity using a thermionic converter.-Nomenclature:In initial...

 (Topol') reactors for spacecraft. Many Bouk and a few TOPAZ were used on RORSAT

RORSAT

Radar Ocean Reconnaissance SATellite or RORSAT is the western name given to the Soviet Upravlyaemyj Sputnik Aktivnyj satellites. These satellites were launched between 1967 and 1988 to monitor NATO and merchant vessels using active radar...

naval reconnaissance satellites.