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2019-Feb-15, 05:46 PM

grapes replied to a thread Thanks to the posters on this forum for helping me write four books in Space/Astronomy Questions and Answers

Unwittingly? Duh :)

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2 replies | 148 view(s)
2019-Feb-13, 04:47 PM

grapes replied to a thread zero dimensional point particle in Space/Astronomy Questions and Answers

Electrons are often considered just points (and/or waves) as far as size, but electron spin is a non-point characteristic, no?

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16 replies | 414 view(s)
2019-Feb-10, 07:31 PM

grapes replied to a thread Would it be possible to jetpack back to Earth from the Moon? in Space/Astronomy Questions and Answers

But we're talking about teen try Whatever (humongous) energy you need to get out of the earth well is returned to the astronaut at teen try, the...

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31 replies | 900 view(s)
2019-Feb-10, 06:29 PM

grapes replied to a thread Solar shield idea to address climate change. in Science and Technology

Or, the 6 looks like a b. A fine line, I guess. 50km in radius is pretty big! Not sure what current technology would handle that. Let's see,...

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32 replies | 805 view(s)
2019-Feb-10, 05:44 PM

grapes replied to a thread Mercury as Winter Evening Star in Astronomy

Thanks Curt! will watch for it I've seen it from suburban shopping center parking lots, and people still insist it is difficult :)

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1 replies | 138 view(s)
2019-Feb-06, 09:14 PM

grapes replied to a thread The Football Planet in Astronomy

I wasn't sure what you were considering the "center" for the centrifugal velocity. If you follow each point of the planet, it describes a circle...

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29 replies | 899 view(s)
2019-Feb-04, 05:59 PM

chornedsnorkack replied to a thread February New Moon Spotting in Astronomy

And remember that this New Moon causes New Year, namely that of Swine.

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1 replies | 86 view(s)
2019-Feb-01, 04:02 PM

grapes replied to a thread The Football Planet in Astronomy

Centrifugal velocity? Is the center the center of the star? Centrifugal velocity would be smallest at the "far" end of the planet, no?

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29 replies | 899 view(s)
2019-Jan-24, 02:31 PM

grapes replied to a thread What do you think is mainstream in cosmology? in Astronomy

Be careful of absolute statements about physics, especially when you a self-described non-expert are disagreeing with physics interpretations. ...

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55 replies | 1479 view(s)
2019-Jan-23, 04:53 PM

grapes replied to a thread Counting My Blessings in Off-Topic Babbling

Was that because of the new cq front page?

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35 replies | 833 view(s)
2019-Jan-19, 11:21 AM

grapes replied to a thread anyone else hate having to sleep? in Off-Topic Babbling

Although some people seem to be able to access the dreaming state without sleeping, it's generally unhealthy. Even having experienced nightmares, I...

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23 replies | 682 view(s)

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