Picturing Earth in a New Light

A recent analysis revealed where artificial light at night has intensified, as well as where it has diminished. The institutional report frames the development in practical terms and ties it to the broader mission or observing effort.

The significance lies in Earth science becomes stronger when local observations can be placed inside a broader physical pattern that spans time and geography. The planet operates as a coupled system in which atmospheric, oceanic, cryospheric and solid-Earth processes interact across timescales from days to millions of years. A measurement that captures one variable at one location and one moment has limited interpretive value until it is embedded in the longer series and wider spatial coverage that allow natural variability to be separated from forced change. An analysis of nearly a decade of nighttime lights data (2014-2022) from NASA’s Black Marble product revealed areas of brightening (gold) and dimming (purple) shown here across. NASA Earth Observatory/Michala Garrison Overall, the researchers found that global radiance increased by 34 percent during the study period, but that surge masks large areas of.

Article View more Images of the Day: May 14, 2026 Instruments: NOAA-20, VIIRS NOAA-21, VIIRS Suomi NPP, VIIRS Collections: Earth at Night Topics: Human Dimensions Some parts of. NASA Earth Observatory/Michala Garrison Maps can show more than just where things are, they can also show how things change.

NASA’s Black Marble product uses observations from the VIIRS (Visible Infrared Imaging Radiometer Suite) sensors on the Suomi-NPP, NOAA-20, and NOAA-21 satellites to produce. Yellow and gold areas are where there has been more brightening during the study period, from 2014 to 2022, and purple areas are where there has been more dimming.

The image was featured on the cover of Nature, where the study was published in April 2026. Stay up-to-date with the latest content from NASA as we explore the universe and discover more about our home planet.

The broader interest lies in linking the observation to climatic, geophysical or environmental dynamics that extend well beyond the immediate event or location. Earth science is unusual in that its most important questions operate on timescales that no single research career can observe directly, making the archival record, whether in ice, sediment, rock or satellite data, as important as any new measurement. Results that can be embedded in that record, and that either confirm or challenge the patterns it reveals, carry disproportionate scientific weight.

Article Northern Glow Spans Iceland and Canada 3 min read A vivid display of the aurora lit up skies over the Denmark Strait and eastern Canada during a minor geomagnetic. Article 1 2 3 4 Next Keep Exploring Discover More from NASA Earth Science Subscribe to Earth Observatory Newsletters Subscribe to the Earth Observatory and get the Earth in your.

Because the account originates with NASA News Releases, it functions best as a primary institutional report that is close to the data and operations, not as independent scientific validation. Institutional communications are produced by organizations with legitimate interests in presenting their work in a favorable light, which does not make them unreliable but does make them partial. Details that complicate the narrative, including instrument limitations, unexpected failures and results below projections, tend to be minimized relative to progress messages. Technical documentation and peer-reviewed publications, where they exist, provide the complementary layer that institutional releases cannot substitute.

The next step is to place the result inside longer time series and to compare it with independent instruments and independent sites. Earth system observations gain most of their interpretive power from network density and temporal depth, not from any single measurement however precise. Model simulations that assimilate the new data will help clarify whether the observation fits comfortably within known natural variability or represents a shift that existing models do not reproduce.

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