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Protoplanetary disc

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A protoplanetary disc (proplyd) is a disc of dust and gas which orbits a protostar, within a solar nebula. Such discs eventually condense into either asteroid belts, moons, or planets.

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... - Founded 1942 by Henry Frenau[?]. Group was moderate left-wing and concentrated on sabotage and counterpropaganda. It published an underground newspaper Combat that ...

 
 
 
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