{Star Cycles}[18th October 1989]

[Redbook6:327][19891018:1842]{Star Cycles}[18th October 1989]

.1842

Star lives:*

[Text extracted from ms image reproduced above:]

						→
					**(Dark cinders)	Interstellar clouds
					White dwarfs	|			(Dark cinders)
	>iron	→			→ \	C		(Gravity contracts)
Forming chemical elements	<= iron	Cooler: shrink →	Supergiants form heavier elements	More massive		Supernovae Neutron Star Pulsar / Black hole			Protostar hotting up
		Red Giant	–	G~***		+		M~	–	Nuclear Fusion
****			Cooling & swelling						Blows away gases
			Running out of hydrogen			A~
						|
						←

Main sequence

career of Star

(Massive stars: Hot. Large, bright, shorter-lived[;]

Less massive: Cooler, smaller, dimmer, longer-lived)

This was, I think, the only (?) circle starting and ending with A~: so this version is an improvement, as well as a better fit.

*ref IV. [[Redbook4:163-164][19871121:1310b]{Star Cycles (III) [continued (3)] – The Main Sequence}[21st November 1987],] 164

**[Unclear whether this is struck through or not]

***[‘R~ as in the ms diagram is clearly a mistake]

****(See Booklet draft, this date, for more detail)

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