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THE NIGHT SKY

Network Three
on Network Three

A monthly series on astronomy
Orbits and Gravity by J. G. PORTER , Ph.D., F.R.A.S.
This month Dr. Porter talks about some interesting orbits-of double stars, comets, minor planets, and satellites-and of how they are aU explained by the universal law of gravitation.

Contributors

Unknown:
J. G. Porter
Source: Radio Times

Network Three

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