by J. G. Porter , Ph.D., F.R.A.S.
This month Dr. Porter tells how the astronomer measures position in the sky.
The diagram shows the night sky in August looking east at midnight.
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by J. G. Porter , Ph.D., F.R.A.S.
This month Dr. Porter tells how the astronomer measures position in the sky.
The diagram shows the night sky in August looking east at midnight.
BBC Home Service is a radio channel that started transmitting on the 1st September 1939 and ended on the 29th September 1967.
