Elektron

Elektron, in American sources sometimes called Electron, was the first Soviet multiple satellite program, comprising two identical pairs of particle physics satellites launched by the Soviet Union in 1964. The four spacecraft simultaneously monitored the lower and upper Van Allen radiation belts and returned a considerable volume of data regarding radiation in space and atmospheric conditions to an altitude of more than 58,000 kilometres (36,000 mi) above the Earth. Two of the four launched satellites are still in orbit as of 2023, the other two having reentered.

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1994  Wikimedia, Wikidata
artificial satellite, 
Ashkenaz, Calvinist Republic of Ghent, Chinland, Democratic Republic of the Congo, Havilah, Kingdom of Martabam-hongsawatoi, Kingdom of Wolaita, Persia, Reman, Sikh Confederacy, Sweden, Tarshish, Dong Fang Hong 2, Ekran, 1994, 

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Location: KML, Cluster Map, Maps,

Frameless

Elektron 2 with diagram notes

Elektron 1 with diagram notes

Elektron24

Elektron 1 and Elektron 2

Elektron 1, a 1964 Soviet satellite

Elektron 2, a 1964 Soviet satellite

Type	Subtype	Date	Description	Notes	Source
commons	image		Elektron 2 with diagram notes		Commons
commons	image		Elektron 1 with diagram notes		Commons
commons	image		Elektron24		Commons
commons	image		Elektron 1 and Elektron 2		Commons
commons	image		Elektron 1, a 1964 Soviet satellite		Commons
commons	image		Elektron 2, a 1964 Soviet satellite		Commons