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2. List of satellite map images with missing or unclear data

   en.wikipedia.org/wiki/List_of_satellite_map...

   Some locations on free, publicly viewable satellite map services have such issues due to having been intentionally digitally obscured or blurred for various reasons of this. [1] For example, Westchester County, New York asked Google to blur potential terrorism targets (such as an amusement park, a beach, and parking lots) from its satellite ...

3. Google Earth - Wikipedia

   en.wikipedia.org/wiki/Google_Earth

   Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery.The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles.

4. Bortle scale - Wikipedia

   en.wikipedia.org/wiki/Bortle_scale

   The Bortle dark-sky scale (usually referred to as simply the Bortle scale) is a nine-level numeric scale that measures the night sky's brightness of a particular location. It quantifies the astronomical observability of celestial objects and the interference caused by light pollution .

5. Rocket launch of SpaceX Falcon 9 lights up Florida sky ... - AOL

   www.aol.com/rocket-launch-spacex-falcon-9...

   In the chilly hours of Wednesday morning, a SpaceX Falcon 9 rocket took its record-breaking 24th flight, delivering 24 of the company's Starlink satellites to orbit. The Falcon 9 rocket launched ...

6. Orders of magnitude (illuminance) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude...

   Cloudy night sky without moon [4] 400 μcd/m 2 "Darkest sky" [5] 1 mcd/m 2: Night sky [6] 1.4 mcd/m 2: Typical photographic scene lit by full moon [7] 10 −2: 5 mcd/m 2: Approximate scotopic/mesopic threshold [8] 10 −1: 10 0: cd/m 2: 2 cd/m 2: Floodlit buildings, monuments, and fountains [9] 10 1: 5 cd/m 2: Approximate mesopic/photopic ...

7. The Perseids meteor shower lights up the sky. Where are the ...

   www.aol.com/weather/perseids-meteor-shower...

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8. Dusk - Wikipedia

   en.wikipedia.org/wiki/Dusk

   Dusk is the darkest part of evening twilight. The time of dusk is the moment at the very end of astronomical twilight, just before the minimum brightness of the night sky sets in, or may be thought of as the darkest part of evening twilight. [4] However, technically, the three stages of dusk are as follows:

9. Winter Solstice: The darkest day of the year is perfect for ...

   www.aol.com/winter-solstice-darkest-day-perfect...

   The darkest day of the year is upon us, Winter Solstice takes place on Thursday, Dec. 21, marking the first day of winter. Ready or not the winter season is here for the next three months bringing ...