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	<title>Comments on: Rolling Rock&#8217;s bucket o&#8217; Moon graffiti</title>
	<atom:link href="http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/feed/" rel="self" type="application/rss+xml" />
	<link>http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/</link>
	<description>I am an astronomer, writer, and skeptic. I likes reality the way it is, and I aims to keep it that way. My real name is Phil Plait, and I run the Bad Astronomy blog.</description>
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		<title>By: kristy</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/comment-page-2/#comment-202269</link>
		<dc:creator>kristy</dc:creator>
		<pubDate>Tue, 28 Jul 2009 21:46:31 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/#comment-202269</guid>
		<description>How do you feel about new talks to use shadows to advertise on the moon?

http://twoifbysee.blogspot.com/2009/07/you-want-moon-moon-advertising-could-be.html</description>
		<content:encoded><![CDATA[<p>How do you feel about new talks to use shadows to advertise on the moon?</p>
<p><a href="http://twoifbysee.blogspot.com/2009/07/you-want-moon-moon-advertising-could-be.html" rel="nofollow">http://twoifbysee.blogspot.com/2009/07/you-want-moon-moon-advertising-could-be.html</a></p>
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		<title>By: Mike</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/comment-page-2/#comment-74748</link>
		<dc:creator>Mike</dc:creator>
		<pubDate>Fri, 25 Apr 2008 09:59:21 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/#comment-74748</guid>
		<description>Here is perhaps the simplest way to see the utter infeasibility of the concept of lighting the full moon in a way that would be visible to the naked eye, requiring no calculations and no knowledge of the moon&#039;s albedo:  The light that we normally see coming from the full moon is reflected from the sunlight that is falling on the entire face of the moon, which has a surface area comparable to a largish continent on Earth (about 2000 mi diameter).  Therefore, to significantly change the light we see reflected back from the moon&#039;s surface, even if the light that we send there is focused so that 100% of it falls on the moon, the amount of light power that we would have to project onto the moon (for a period sustained long enough to see) would have to be comparable to the amount of power that would be produced if one were to cover all of North America with high-efficiency solar panels, or, more simply, mirrors reflecting the sun&#039;s image onto the moon.  At the Earth&#039;s distance from the moon, North America looks about as large as the sun, so an image of the sun could just barely fit into a North-America-sized mirror.  Or, another way to think about the problem:  From the point of view of someone standing on the moon (anywhere on the area to be lit), the source of light on Earth would have to look about as bright to them as the sun looks to us.  Think about how much power it would take to make the Earth appear as bright as the sun!</description>
		<content:encoded><![CDATA[<p>Here is perhaps the simplest way to see the utter infeasibility of the concept of lighting the full moon in a way that would be visible to the naked eye, requiring no calculations and no knowledge of the moon&#8217;s albedo:  The light that we normally see coming from the full moon is reflected from the sunlight that is falling on the entire face of the moon, which has a surface area comparable to a largish continent on Earth (about 2000 mi diameter).  Therefore, to significantly change the light we see reflected back from the moon&#8217;s surface, even if the light that we send there is focused so that 100% of it falls on the moon, the amount of light power that we would have to project onto the moon (for a period sustained long enough to see) would have to be comparable to the amount of power that would be produced if one were to cover all of North America with high-efficiency solar panels, or, more simply, mirrors reflecting the sun&#8217;s image onto the moon.  At the Earth&#8217;s distance from the moon, North America looks about as large as the sun, so an image of the sun could just barely fit into a North-America-sized mirror.  Or, another way to think about the problem:  From the point of view of someone standing on the moon (anywhere on the area to be lit), the source of light on Earth would have to look about as bright to them as the sun looks to us.  Think about how much power it would take to make the Earth appear as bright as the sun!</p>
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		<title>By: Chris</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/comment-page-2/#comment-74747</link>
		<dc:creator>Chris</dc:creator>
		<pubDate>Tue, 15 Apr 2008 09:27:18 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/#comment-74747</guid>
		<description>P.S.  Why is society so desperate to occupy the moon, mars or any other celestial object other than Earth. We as a collective society can not even manage this planet to keep pollution, political strife, and a harmonious balance in check. Why spread our &#039;viral&#039; ways further. We should be more concentrated on &#039;SAVING&#039; our planet, than spreading our &#039;crap&#039; into outer space!!!!!!!!</description>
		<content:encoded><![CDATA[<p>P.S.  Why is society so desperate to occupy the moon, mars or any other celestial object other than Earth. We as a collective society can not even manage this planet to keep pollution, political strife, and a harmonious balance in check. Why spread our &#8216;viral&#8217; ways further. We should be more concentrated on &#8216;SAVING&#8217; our planet, than spreading our &#8216;crap&#8217; into outer space!!!!!!!!</p>
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		<title>By: Chris</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/comment-page-2/#comment-74746</link>
		<dc:creator>Chris</dc:creator>
		<pubDate>Tue, 15 Apr 2008 09:22:53 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/#comment-74746</guid>
		<description>Of course this would not work, for would&#039;nt a laser melt the green cheese that the moon is made of? (Tee Hee)

On the &#039;fake&#039; moon landing...is the &#039;flag&#039; that was planted still there and if so is it visable through powerful telescopes from earth? Would this either prove the moon landing as fact or expose it as a hoax?</description>
		<content:encoded><![CDATA[<p>Of course this would not work, for would&#8217;nt a laser melt the green cheese that the moon is made of? (Tee Hee)</p>
<p>On the &#8216;fake&#8217; moon landing&#8230;is the &#8216;flag&#8217; that was planted still there and if so is it visable through powerful telescopes from earth? Would this either prove the moon landing as fact or expose it as a hoax?</p>
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		<title>By: Walter</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/comment-page-2/#comment-74745</link>
		<dc:creator>Walter</dc:creator>
		<pubDate>Sat, 05 Apr 2008 12:46:09 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/#comment-74745</guid>
		<description>What if a laser was stationed at the Earth-Moon Langrange 1 point?
This is a stable point only about 60000 miles from the moon.</description>
		<content:encoded><![CDATA[<p>What if a laser was stationed at the Earth-Moon Langrange 1 point?<br />
This is a stable point only about 60000 miles from the moon.</p>
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		<title>By: Darth Borehd</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/comment-page-2/#comment-74744</link>
		<dc:creator>Darth Borehd</dc:creator>
		<pubDate>Thu, 03 Apr 2008 04:02:14 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/#comment-74744</guid>
		<description>I was thinking about how you might make something appear to be on the moon.  Perhaps if they aimed the lasers so that they intersected at certain points and had a lot of dust in the air, They could create the optical illusion of something being displayed on the moon.  Or maybe instead of lasers they could make some kind of display with search lights??</description>
		<content:encoded><![CDATA[<p>I was thinking about how you might make something appear to be on the moon.  Perhaps if they aimed the lasers so that they intersected at certain points and had a lot of dust in the air, They could create the optical illusion of something being displayed on the moon.  Or maybe instead of lasers they could make some kind of display with search lights??</p>
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		<title>By: Roberto</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/comment-page-2/#comment-74743</link>
		<dc:creator>Roberto</dc:creator>
		<pubDate>Wed, 02 Apr 2008 15:07:03 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/03/05/rolling-rocks-bucket-o-moon-graffiti/#comment-74743</guid>
		<description>I appreciate that many of you think this was an effective advertising scheme because it got us &quot;talking about it.&quot; But frankly, except for the first few minutes when I wondered if it was actually possible to do what Rolling Rock claimed it was going to do, after I figured out that it was a joke, I stopped caring. I don&#039;t drink their beer, and never will. And even if they COULD beam their logo to the moon, I still wouldn&#039;t drink their beer.</description>
		<content:encoded><![CDATA[<p>I appreciate that many of you think this was an effective advertising scheme because it got us &#8220;talking about it.&#8221; But frankly, except for the first few minutes when I wondered if it was actually possible to do what Rolling Rock claimed it was going to do, after I figured out that it was a joke, I stopped caring. I don&#8217;t drink their beer, and never will. And even if they COULD beam their logo to the moon, I still wouldn&#8217;t drink their beer.</p>
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