An Unexpected Expanse of Sand in Alaska
Image of the Day Dec 2, 2020

An Unexpected Expanse of Sand in Alaska

Dune fields of interest to scientists who study the Red Planet stand out in the Kobuk Valley amid a backdrop of green.
Outburst at Desolation Lake
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Outburst at Desolation Lake

A flood in a glacial lake behind Lituya Glacier surprised an unsuspecting fisherman and reworked a young delta in Alaska.

Published Nov 30, 2020

Image of the Day Land Water Unique Imagery Snow and Ice

Thomsen River Estuary, Banks Island
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Thomsen River Estuary, Banks Island

Sea ice and waterways along the north side of Canada’s high-Arctic island reveal compelling patterns when viewed from above.

Published Nov 30, 2020

Image of the Day Land Water

The Braided Brahmaputra
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The Braided Brahmaputra

The river’s high sediment load contributes to the abrupt change in its shape as it exits the Himalayas and hits flatter land.

Published Nov 29, 2020

Image of the Day Land Water

Painting Pennsylvania Hills
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Painting Pennsylvania Hills

The region of rolling hills and valleys is part of a geologic formation known as the Ridge and Valley Province that stretches from New York to Alabama.

Published Nov 28, 2020

Image of the Day Land Human Presence Remote Sensing

A Sliver of Mexico’s “Mother Mountain Range”
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A Sliver of Mexico’s “Mother Mountain Range”

The Sierra Madre Oriental is part of a chain that stretches across three continents.

Published Nov 27, 2020

Image of the Day Land Human Presence

Dust Over Seas
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Dust Over Seas

A plume of mineral-rich dust filled the skies over Cyprus and the Mediterranean on a summer’s day.

Published Nov 26, 2020

Image of the Day Atmosphere Land

Gati Makes Historic Landfall in Somalia
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Gati Makes Historic Landfall in Somalia

Cyclone Gati became the strongest storm to hit the country on record, bringing more than a year’s worth of rain in two days.

Published Nov 25, 2020

Image of the Day Atmosphere Land Life

Water Vapor
Global Maps Jul 2002 — Oct 2020

Water Vapor

These maps show the average amount of water vapor in a column of atmosphere by month. Water vapor is the key precursor for rain and snow and one of the most important greenhouse gases in the atmosphere.

Atmosphere

Vegetation
Global Maps Mar 2000 — Oct 2020

Vegetation

Greenness is an important indicator of health for forests, grasslands, and farms. The greenness of a landscape, or vegetation index, depends on the number and type of plants, how leafy they are, and how healthy they are.

Land Life

Sea Level Watcher Takes Flight
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Sea Level Watcher Takes Flight

Sentinel-6 Michael Freilich will extend a nearly 30-year continuous dataset on sea surface height.

Published Nov 24, 2020

Image of the Day Atmosphere Land Human Presence Remote Sensing

African Dust Plume Blankets the Caribbean
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African Dust Plume Blankets the Caribbean

A towering thunder cloud stands at the intersection of moist tropical air and dry, dusty plumes.

Published Nov 22, 2020

Image of the Day Atmosphere

Blue Marble Next Generation
Article

Blue Marble Next Generation

12 months of high-resolution global true color satellite imagery.

Published Oct 13, 2005

Atmosphere Land Water Snow and Ice

Tremendous Tides in Broad Sound
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Tremendous Tides in Broad Sound

Tidal swings here are greater than at any other place on the east coast of Australia.

Published Nov 21, 2020

Image of the Day Water

The Chesapeake Bay Watershed: Still Cloudy, With a Chance of Clearing
Article

The Chesapeake Bay Watershed: Still Cloudy, With a Chance of Clearing

It is the largest estuary in the United States and third largest in the world. Once sculpted and changed by ice, water, and powerful geologic forces over tens of millions of years, today's Bay is shaped by human forces as well.

Published Dec 1, 2016

Land Water Human Presence Remote Sensing

Lituya Bay’s Apocalyptic Wave
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Lituya Bay’s Apocalyptic Wave

One of the tallest tsunami waves known to science slammed this Alaskan bay in 1958.

Published Nov 20, 2020

Image of the Day Land Water Unique Imagery Remote Sensing

Flooding in Northern Luzon
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Flooding in Northern Luzon

In the wake of three typhoons within a month, the Philippines provinces of Cagayan and Isabela have seen some of their worst flooding in decades.

Published Nov 19, 2020

Image of the Day Land Water Severe Storms Human Presence

Aerosol Size
Global Maps Jan 2005 — Sep 2016

Aerosol Size

Sea salt, volcanic ash, dust, wildfire smoke, and industrial pollution are types of airborne aerosols. Natural aerosols tend to be larger than human-made aerosols. These maps show when and where aerosols come from nature, humans, or both.

Atmosphere

Sea Surface Temperature
Global Maps Jul 2002 — Aug 2020

Sea Surface Temperature

Ocean temperatures can influence weather, such as hurricane formation, and climate patterns, such as El Niño. These maps show the temperature at the surface of the world’s seas and oceans.

Heat Water

Three More Years: CYGNSS Completes Its First Senior Review
Notes from the Field

Three More Years: CYGNSS Completes Its First Senior Review

The satellite constellation has been approved to continue science operations through 2023.

Published Nov 9, 2020 in Notes From the Field

EO November 2020 Puzzler
Earth Matters

EO November 2020 Puzzler

Every month we offer a puzzling satellite image. Your challenge is to tell us what we are looking at, where it is, and why it is interesting.

Published Nov 3, 2020 in Earth Matters

Chlorophyll
Global Maps Jul 2002 — Oct 2020

Chlorophyll

Chlorophyll is used by algae and other phytoplankton--the grass of the sea--to convert sunlight and carbon dioxide into sugars. These maps show chlorophyll concentrations in the ocean, revealing where phytoplankton are thriving.

Life Water

Fire
Global Maps Mar 2000 — Oct 2020

Fire

Whether started by humans (farming, logging, or accidents) or by nature (lightning), fires are always burning somewhere on Earth. These maps show the locations of fires burning around the world each month.

Land

Picturing Earth: Window On The World
Article

Picturing Earth: Window On The World

From their home on the International Space Station, astronauts have a view unlike anything most of us will ever see. Over 20 years, they have shot millions of photographs of Earth, and it is not just a hobby. It is an important scientific job, and one they need to be trained to do. Learn more about the challenges of watching Earth from above.

Published Nov 2, 2020

Human Presence Remote Sensing Videos

Picturing Earth: Astronaut Photography In Focus
Article

Picturing Earth: Astronaut Photography In Focus

For 20 years, astronauts have been shooting photos of Earth from the space station. Like everything the astronauts do, they are trained for this job. And like everything they do, there is purpose and intention behind it.

Published Oct 20, 2020

Human Presence Remote Sensing Videos

Could COVID-19 Have Seasons? Searching for Signals in Earth Data
Article

Could COVID-19 Have Seasons? Searching for Signals in Earth Data

A race is on to figure out whether COVID-19 will wax and wane with the seasons. Atmospheric and hydrologic models produced by NASA and other institutions may be key to that research.

Published Jul 14, 2020

Atmosphere Life Human Presence Remote Sensing

Mission: Biomes
Article

Mission: Biomes

Have you ever wondered what it would be like to live in a different part of the world? What would the weather be like? What kinds of animals would you see? Which plants live there? By investigating these questions, you are learning about biomes.

Published Aug 28, 2020

Land Life

Of Mosquitoes and Models: Tracking Disease by Satellite
Article

Of Mosquitoes and Models: Tracking Disease by Satellite

A few decades ago, the idea of predicting a disease outbreak via satellite was science fiction. But today, researchers can use environmental data to predict when and where some diseases are likely to spread.

Published Jul 9, 2020

Life Human Presence Remote Sensing

Earth at Night
Article

Earth at Night

Satellite images of Earth at night have been a curiosity for the public and a tool of fundamental research for at least 25 years. They have provided a broad, beautiful picture, showing how humans have shaped the planet and lit up the darkness.

Published Apr 12, 2017

Atmosphere Land Human Presence Remote Sensing

Applied Sciences Collection
Article

Applied Sciences Collection

NASA satellites and sensors constantly take the pulse of our planet. Researchers apply those observations on local and regional scales to better manage things like food and water supplies, health, safety, land use, and ecosystems.

Published May 1, 2020

Human Presence Remote Sensing