Outer space sub-committee discusses spacecraft and satellite issues.

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Proposals regarding the use of nuclear power sources on spacecraft and use of remote sensing of the Earth by satellites were dicussed at the annual session of the Scientifc and Technical Sub-Committee of the Committee on the Peaceful Uses of Outer Space (11-22 February, New York).

How to best use the geostationary orbit and implement recommendations of the Second United Nations Conference on the Exploration and Peaceful Uses of Outer Space (UNISPACE 82) were also debated, as were developments regarding the United Nations Space Applications Programme and space transportation systems.

Three studies recommended by UNISPACE 82 and given priority by the Outer Space Committee on aid to countries in assessing their remote sensing needs, use of the geostationary orbit, and direct broadcasting for educational purposes were reviewed this year. They are to be forwarded to the parent body for review and recommendation for action at its June 1985 session (see Features, p. 18).

The body's Working Group on the Use of Nuclear Power Sources in Outer Space, which met during the session, heard proposals regarding international criteria to prevent accidents and minimize harmful consequences in cases of unplanned re-entry of space vehicles carrying nuclear power sources. Also considered were notifications of nuclear-powered satellites and a world-wide monitoring system to operate in case of accident or unplanned re-entry of nuclear-powered spacecraft.

Continued work was recommended on updating a list of remote-sensing applications, which the secretariat has been compiling for the use of all interested nations.

The importance of free access to data from meteorological satellites was recognized by the Sub-Committee, as was the need to provide appropriate and non-discriminatory assistance in the area of remote sensing to meet the needs of developing countries. Remote sensing, it said, should also be carried out with the greatest possible international co-operation and participation.

The 53-member body also noted that a United Nations directory on space information and data services would be published in 1985, focusing on training, research and fellowship opportunities, as a step towards establishing an international space information service as recommended at UNISPACE 82.

Developments in space transportation systems were considered, including those of China (the CZ-3 launch vehicle which recently...