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Size of Sun as seen from Mercury
djellison
post Jun 29 2011, 10:22 PM
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Every time a pointless debate of semantics begins, a baby seal pup gets clubbed to death

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ElkGroveDan
post Jun 30 2011, 01:51 PM
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QUOTE (djellison @ Jun 29 2011, 03:22 PM) *
Every time a pointless debate of semantics begins, a baby seal pup gets clubbed to death

That reminds me Doug, your pelts from last month are ready. The guy says he's OK with coats and hats, but there is no way he can stitch them into undershorts. Sorry.


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ilbasso
post Jun 30 2011, 01:56 PM
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I need to be better about using smiley faces.


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hendric
post May 16 2018, 08:26 PM
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Are there any good videos of the sun throughout a Mercurian day? I found this video, but it doesn't show how the sun's location varies, or what a specific observer on a specific spot would see. I assume there are solar system simulators that would allow one to stand on spots on Mercury and watch the sun progress?

https://www.youtube.com/watch?v=gubNWJ5RlP4

I assume at one of the sub-solar points you would see the Sun approach overhead, slow down, get larger, pause for a bit, then speed up and get smaller. But what would a person not at one of those points see? If you were 90* away, the sun would be largest at sunrise, shrink, then get larger again at sunset?

Thanks everyone!


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Sean
post May 16 2018, 09:01 PM
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Space Engine will show you.

http://spaceengine.org/


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Gustavo B C
post May 17 2018, 06:48 AM
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Stellarium as well is pretty good. F6 to change location, switch planet to Mercury, pick somewhere on the map and speed up time as you wish. You can zoom into the Sun and watch it change size as time progresses, change your location 90 to the east/west and do the same again. Spoiler alert: your assumption is correct wink.gif

Curiously, just over a year ago I made a gif/short video using Stellarium (Gfycat link) of what a solar day on Mercury would look like, but the change in apparent size of the Sun isn't really noticeable - it was more aimed at visualising the Sun's movement through the sky. The labels are all in Portuguese, L is east and O is west.


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hendric
post May 17 2018, 09:52 PM
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Thanks for tips, those both look like great programs!


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Space Enthusiast Richard Hendricks
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"The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke
Mother Nature is the final inspector of all quality.
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djellison
post May 18 2018, 12:30 AM
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https://eyes.nasa.gov could do it as well. If you use the shoulder camera on Mercury then lock the camera to the sun you could watch it all day.
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John Moore
post May 18 2018, 12:43 AM
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.
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