Now it is to be sent into orbit in May.

The satellite was sent into orbit on February 11, 1970.

The satellite was sent into orbit on August 30, 1991.

The satellite was sent into orbit on September 16, 1978.

The satellite was sent into orbit on February 21, 1981.

The satellite was sent into orbit on February 16, 1971.

The satellite was sent into orbit on September 28, 1971.

The satellite was sent into orbit on February 24, 1975.

The satellite was sent into orbit on February 5, 1987.

The moon was sent back into orbit after these events.