Explanation: How far are you from a naturally dark night sky? In increasing steps, this world map (medium | large) shows the effect of artificial night sky brightness on the visual appearance of the night sky. The brightness was modeled using high resolution satellite data and fit to thousands of night sky brightness measurements in recent work. Color-coded levels are compared to the natural sky brightness level for your location. For example, artificial sky brightness levels in yellow alter the natural appearance of the night sky. In red they hide the Milky Way in an artificial luminous fog. The results indicate that the historically common appearance of our galaxy at night is now lost for more than one-third of humanity. That includes 60% of Europeans and almost 80% of North Americans, along with inhabitants of other densely populated, light-polluted regions of planet Earth.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: nochnoe nebo - zasvetka - night sky - light pollution Publikacii so slovami: nochnoe nebo - zasvetka - night sky - light pollution
Sm. takzhe: Nochnoe nebo nad Tatrami Kak opredelit', chto svetitsya na nebe Troinoe siyanie nochnogo neba nad Islandiei Noch' ot zakata do rassveta nad Baltiiskim morem Iskusstvennaya yarkost' nochnogo neba Zhivopisnoe nebo nad Lofotenskimi ostrovami Yarostnoe nebo nad goroi Shasta Vse publikacii na tu zhe temu >>