Stars

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Ann
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Re: Stars

Postby Ann » Mon Oct 31, 2016 8:51 am

When the astronauts landed on the Moon, they touched down on the daylight side. That means that the lunar landscape was light polluted.

Moon over Montreal. Photo: YuppiDu
On the Earth, when a light polluted scene is photographed, we rarely see any stars in the sky.

You can, however, photograph stars even from a light-polluted city, but it takes careful planning to do so. Similarly it would have been possible to photograph stars from the surface of the Moon, but it would have taken planning to do so, and it was never done.







However, stars and other celestial bodies have indeed been photographed from spacecraft in orbit. The picture at right shows brilliant Venus and bright star Spica as photographed by an astronaut on the ISS. This caption was taken from https://commons.wikimedia.org/wiki/File ... tinent.jpg:

On Dec. 5, 2015, Japan Aerospace Exploration Agency (JAXA) astronaut Kimiya Yui captured this image from the International Space Station of the planet Venus shining bright. Part of the station's Kibo laboratory with the star Spica visible below is seen at the top of the frame. At the time this photograph was taken, Japan's Akatsuki spacecraft, a Venus climate orbiter, was nearing the planet.


So you can indeed see stars from the ISS and other orbiters, but whether or not they will show up in photographs depends on several factors.

Ann
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geckzilla
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Re: Stars

Postby geckzilla » Mon Oct 31, 2016 9:15 am

I'm sorry to say that you've managed to respond to a spammer whose post was merely generated by a bot. I've removed it, but left your post.
Just call me "geck" because "zilla" is like a last name.

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rstevenson
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Re: Stars

Postby rstevenson » Mon Oct 31, 2016 2:34 pm

But it was an informative post, Ann. And I'm guessing the spammer wasn't intending to get anyone to respond so informatively. Good for you!

Rob

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Ann
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Re: Stars

Postby Ann » Tue Nov 01, 2016 3:49 am

Thanks, Geck and Rob!

Ann
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Fred the Cat
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Re: Stars

Postby Fred the Cat » Tue Nov 01, 2016 7:59 pm

I wish there was just one star that proved relativity rather than a group of stars. It should bear his name. Anyone interested in some "light" listening can hear the story. :ssmile:
Feynman's Felicity "Only ascertain as a cat box survivor"

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Chris Peterson
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Re: Stars

Postby Chris Peterson » Tue Nov 01, 2016 8:07 pm

Fred the Cat wrote:I wish there was just one star that proved relativity...

Relativity can't be proven. Only disproven.
Chris

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Fred the Cat
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Re: Stars

Postby Fred the Cat » Tue Nov 01, 2016 8:32 pm

Chris Peterson wrote:
Fred the Cat wrote:I wish there was just one star that proved relativity...

Relativity can't be proven. Only disproven.


You are correct. We can all be fooled. :wink:
Feynman's Felicity "Only ascertain as a cat box survivor"


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