<story><title>What are the mysterious light sources on light pollution maps?</title><url>https://altairspace.com/2020/03/02/mysterious-light-sources/</url></story><parent_chain><item><author>amatecha</author><text>Ah yeah, in the post&amp;#x27;s first &amp;quot;unknown light pollution&amp;quot; example, I figured it must be a greenhouse.  I was driving through a relatively small town one time and was a bit freaked out by this ominous yellow glow off in the distance.  Like, the whole sky was glowing [0].  I ended up driving out to try to find the source, and discovered it was a huge greenhouse&amp;#x2F;farm.  Luckily not an extraterrestrial landing zone or so on ;)&lt;p&gt;[0] looked like this &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;i.cbc.ca&amp;#x2F;1.4925044.1543460834!&amp;#x2F;fileImage&amp;#x2F;httpImage&amp;#x2F;image.JPG_gen&amp;#x2F;derivatives&amp;#x2F;original_1180&amp;#x2F;night-sky.JPG&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;i.cbc.ca&amp;#x2F;1.4925044.1543460834!&amp;#x2F;fileImage&amp;#x2F;httpImage&amp;#x2F;i...&lt;/a&gt;</text></item></parent_chain><comment><author>kabacha</author><text>They are absolutely awful.&lt;p&gt;I&amp;#x27;ve lived relatively close to one and hadn&amp;#x27;t seen night&amp;#x27;s sky for the whole duration I stayed there. Actually the whole town&amp;#x27;s sky was filled with light polution from one cucumber farm.</text></comment>
<story><title>What are the mysterious light sources on light pollution maps?</title><url>https://altairspace.com/2020/03/02/mysterious-light-sources/</url></story><parent_chain><item><author>amatecha</author><text>Ah yeah, in the post&amp;#x27;s first &amp;quot;unknown light pollution&amp;quot; example, I figured it must be a greenhouse.  I was driving through a relatively small town one time and was a bit freaked out by this ominous yellow glow off in the distance.  Like, the whole sky was glowing [0].  I ended up driving out to try to find the source, and discovered it was a huge greenhouse&amp;#x2F;farm.  Luckily not an extraterrestrial landing zone or so on ;)&lt;p&gt;[0] looked like this &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;i.cbc.ca&amp;#x2F;1.4925044.1543460834!&amp;#x2F;fileImage&amp;#x2F;httpImage&amp;#x2F;image.JPG_gen&amp;#x2F;derivatives&amp;#x2F;original_1180&amp;#x2F;night-sky.JPG&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;i.cbc.ca&amp;#x2F;1.4925044.1543460834!&amp;#x2F;fileImage&amp;#x2F;httpImage&amp;#x2F;i...&lt;/a&gt;</text></item></parent_chain><comment><author>yread</author><text>Yellow glow is understandable, but check out this purple one&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.cbc.ca&amp;#x2F;news&amp;#x2F;canada&amp;#x2F;windsor&amp;#x2F;not-northern-lights-greenhouse-glows-1.4924468&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.cbc.ca&amp;#x2F;news&amp;#x2F;canada&amp;#x2F;windsor&amp;#x2F;not-northern-lights-g...&lt;/a&gt;</text></comment>