A

David

Darling

Efir

Efir

Efir was a series of Soviet scientific spacecraft based on the Vostok/Zenit design; "Efir" is Russian for "ether". They were used to measure the energy spectrum and charge composition of primary cosmic rays with energy above 2 TeV. The Efirs were announced under the catchall Cosmos designation.

 


spacecraft launch date launch vehicle site orbit duration mass
Cosmos 1543 Mar 10, 1984 Soyuz-U Plesetsk 214 × 401 km × 62.8° 26 days 6,300 kg
Cosmos 1713 Dec 27, 1985 Soyuz-U Plesetsk 215 × 397 km × 62.8° 26 days 6,300 kg