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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2021 moon phases northern hemisphere
2021 moon phases
North Hemis.
2021 moon phases southern hemisphere
2021 moon phases
South Hemis.
Losing the Dark feature on worldwide light pollution
Earth's light spoiling the night
To scale The Solar System
our solar system built to scale

The Milky Way as ancient saw it - introduction by Archeo Doxa in 2015
Milky Way as ancients saw it

en Français, English CC 4:13

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