Maps can show more than just where things are - they can also show how things change, and according to NASA's latest analysis of its Black Marble data, our planet has been busy reshaping its nights with a mix of brightening and dimming that's far more nuanced than a simple flick of a light switch.
The analysis, based on observations from the VIIRS sensors on the Suomi-NPP, NOAA-20, and NOAA-21 satellites, covers nearly a decade from 2014 to 2022 and reveals a world flickering with industrial booms and busts, construction, blackouts, and policy-driven retrofits - essentially, Earth's nightlife is a complex soap opera, not a monotone sitcom.
Overall, global radiance increased by 34 percent during the study period, but that surge masks large areas of dimming - a phenomenon the researchers call “bidirectional changes,” which often happen side by side, like a couple arguing over the thermostat. In the U.S., West Coast cities grew brighter as populations increased, while much of the East Coast showed dimming, attributed to energy-efficient LEDs and broader economic restructuring. Meanwhile, China and northern India saw surges in nighttime light alongside urban development, while LEDs and energy conservation measures led to reduced light pollution in Paris and throughout France (33 percent dimming), the UK (22 percent dimming), and the Netherlands (21 percent dimming). European nights dimmed sharply in 2022 during a regional energy crisis following the Russia-Ukraine conflict.
The map, published as the cover of Nature in April 2026, shows changes in brightness across most of the inhabited world (between 60 degrees south and 70 degrees north), with yellow and gold areas indicating brightening and purple areas showing dimming. A visualization of the Eastern Hemisphere includes artistic touches like simulated sunlight and shadows, but the nighttime lights data remains grounded in scientific analysis - because even NASA appreciates a good aesthetic.