The very high orbit of Prognoz 9 (above) launched in 1983, was necessary to conduct the Relikt-1 experiment to examine the uniformity of the cosmic 2.7 degrees K black-body radiation which is believed to represent the remnant of the creation of the universe according to the big-bang theory. An even more sophisticated program, called Relikt-2, will continue this work from a halo orbit around the L2 libration point 1.5 million km from Earth. A secondary objective for this mission will be the examination of the geotail plasma (References 67-71).
68. T. Breus, Aviatsiya i Kosmonavtika, September 1984, p. 39.
69. I.A. Strukov, et al, Pisma V. Astronomicheskiy, May 1992, pp. 387-395.
70. Kosmicheskiye Issledovaniya, July-August 1992, pp. 435-454; July-August 1993, pp. 18-37; February 1994, pp. 3-35.
71. I.A. Strukov, et al, "Relikt-2 Project: Scientific Program and Structure", Paper IAF-90-421, 41st Congress of the International Astronautical Federation, 1990.