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Old 28-01-2019, 03:56   #1
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Earth at Night

Lights of Human Activity Shine in NASA's Image of Earth at Night
https://svs.gsfc.nasa.gov/12573

Earth at Night ➥ https://www.nasa.gov/topics/earth/ea...rth_night.html

Amazing Earth: Satellite Images From 2018 ➥ https://www.nasa.gov/feature/amazing...te-images-from


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Old 28-01-2019, 04:14   #2
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Re: Earth at Night

Thanks Gord. Interesting
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Old 28-01-2019, 05:14   #3
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Re: Earth at Night

How is it night over the whole world? Did they turn the sun off? This is really going to mess with my Noon sites.
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Old 28-01-2019, 05:27   #4
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Re: Earth at Night

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How is it night over the whole world? Did they turn the sun off? This is really going to mess with my Noon sites.
Sun is on the other side of the flat earth, duh!
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Old 28-01-2019, 06:29   #5
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Re: Earth at Night

Quote:
Originally Posted by Tellie View Post
How is it night over the whole world? Did they turn the sun off? This is really going to mess with my Noon sites.
Good question.
The new composite maps were produced with data from all months of each year. The team wrote code that picked the clearest night views each month, ultimately combining moonlight-free and moonlight-corrected data. Suomi NPP observes nearly every location on Earth at roughly 1:30 p.m. and 1:30 a.m. (local time) each day, observing the planet in vertical 3000-kilometer strips from pole to pole. VIIRS includes a special “day-night band,” a low-light sensor that can distinguish night lights with six times better spatial resolution and 250 times better resolution of lighting levels (dynamic range) than previous night-observing satellites.
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Old 28-01-2019, 07:33   #6
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Re: Earth at Night

Thank goodness we have the oceans or there wouldn't be any darkness left...


It's really very sad. My neighbors, for instance, just can't seem to add enough landscape lighting. It's like daytime out there. I don't know how the nocturnal animals survive.
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Old 28-01-2019, 07:49   #7
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Re: Earth at Night

Coming into an anchorage at night, no wonder it is difficult to pick out the lighted buoys and markers.
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Old 29-01-2019, 05:15   #8
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Re: Earth at Night

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Sun is on the other side of the flat earth, duh!



There's always a good answer to a smart alec question.
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Old 29-01-2019, 05:31   #9
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Re: Earth at Night

Good map to have when one decides to sail away from it all.
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Old 29-01-2019, 06:41   #10
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Re: Earth at Night

Africa is still very much the 'Dark Continent'.
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Old 29-01-2019, 07:18   #11
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Re: Earth at Night

How come those who live on an island out West don't turn the lights off at night?
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Old 29-01-2019, 08:08   #12
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Re: Earth at Night

Thanks, Gord - Very Cool!
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Old 29-01-2019, 08:12   #13
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Re: Earth at Night

Nice. Most of the places I’ve cruised are on the dimmer side of things.
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Old 29-01-2019, 12:46   #14
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Re: Earth at Night

Our Kiwi neighbors will have a hard time spotting NZ!

Pretty neat, even if it is doctored!

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