most urban populations have lost or are losing Dark Skies and the Milky Way
"Losing the Dark" – The International Dark-Sky Association and Loch Ness Productions
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2018 moon phases northern hemisphere
2018 moon phases
Northern H.
 5:00
2018 moon phases southern hemisphere
2018 moon phases
Southern H.
 5:00
Losing the Dark feature on worldwide light pollution
Earth's light spoiling the night
6:25
To scale The Solar System
our solar system built to scale

7:07
The Milky Way: The Story of a Frontier - introduction by Archeo Doxa
Milky Way as ancients saw it

en Français, English CC 4:13




 
star field by Starry Night Backyard, formerly Imaginova   now Simulation Curriculum