Empowered by free access to the Landsat data archive, earth scientists are using new computing tools to ask questions that were impossible to answer a decade ago. From week-to-week fluctuations in forests to year-to-year changes in land cover, researchers can now examine our planet in much greater detail. Read more
While the sea overtakes much of the delta plain of the Mississippi River, sediment from the Atchafalaya River is building two new deltas to the west. Read more
Hitch a ride with Landsat 8 as it takes flight over the North Pole on the solstice. Read more
Earth’s temperature depends on how much sunlight the land, oceans, and atmosphere absorb, and how much heat the planet radiates back to space. This fact sheet describes the net flow of energy through different parts of the Earth system, and explains how the planetary energy budget stays in balance. Read more
Knowledge of soil moisture is important for applications such as weather forecasting, crop monitoring, and flood prediction. For a global picture of this key parameter, NASA is launching the Soil Moisture Active Passive (SMAP) satellite. Read more
Satellite images showing how our world— forests, oceans,
cities, even the Sun— has changed in recent decades.
The night side of Earth twinkles with light in these composite global and regional views.