Cheap Astronomy
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2021-Jan-15, 09:59 AM

Cheap Astronomy started a thread The measurable position of a black hole's event horizon in Space/Astronomy Questions and Answers

I'm imagining a static context where you have a large black hole that doesn't change in size or mass and isn't rotating (i.e. a hypothetical...

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3 replies | 79 view(s)
2021-Jan-05, 10:58 AM

Cheap Astronomy replied to a thread Curious about nuclear thermal propulsion in Space/Astronomy Questions and Answers

Thanks everyone - great information.

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16 replies | 431 view(s)
2021-Jan-04, 11:15 AM

Cheap Astronomy started a thread Curious about nuclear thermal propulsion in Space/Astronomy Questions and Answers

As I understand it, an effective nuclear thermal propulsion engine for a large spacecraft has to run very hot, potentially so hot it would...

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16 replies | 431 view(s)

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