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**GordMay** · 28-01-2019, 03:56

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

**hpeer** · 28-01-2019, 04:14

Thanks Gord. Interesting

**Tellie** · 28-01-2019, 05:14

How is it night over the whole world? Did they turn the sun off? This is really going to mess with my Noon sites.

Hoosierdoc · 28-01-2019, 05:27

Quote:

Originally Posted by Tellie

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!

**GordMay** · 28-01-2019, 06:29

Quote:

Originally Posted by Tellie

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.

pete33458 · 28-01-2019, 07:33

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.