Surface Water | Simple Site

Earth Observatory

Olympic Mountain Glory

Snow-capped mountains carved by deep river valleys preside over northwestern Washington state.

Posted July 23, 2026

Earth Observatory

Fans of the Arctic

Sediment eroded from ice-capped mountains splays out across a broad river valley on Russia’s Severny Island.

Posted July 14, 2026

Earth Observatory

Landsat 8 / LDCM (Landsat Data Continuity Mission)

Wild, Scenic, and Increasingly Rusty

Orange streams are now being spotted in hundreds of watersheds in permafrost areas throughout Alaska’s Brooks Range.

Posted July 13, 2026

Earth Observatory

Examining Algal Blooms in Blue Mesa

Using satellite data, researchers connected harmful algal blooms with warm water and low water levels at one of Colorado’s largest reservoirs.

Posted July 6, 2026

Earth Observatory

Rising Waters Swamp Lake Naivasha

Relentless rains are threatening a lake in Kenya’s Great Rift Valley that has become a key hub in the global flower trade.

Posted June 23, 2026

Earth Observatory

Moderate Resolution Imaging Spectroradiometer (MODIS)

Sea Ice

Snow

Signs of Thaw in the Bering Sea

Drifting sea ice fragments near Alaska’s Saint Lawrence and Nunivak islands and colorful water around the Yukon Delta heralded the approach of the summer solstice.

Posted June 22, 2026

Earth Observatory

Low Water at San Carlos Reservoir

Drought and water releases drained the Arizona reservoir to levels that have led to widespread fish deaths.

Posted June 17, 2026

Earth Observatory

Floods

Snow

Ice Moves Out of Aniak

Spring melt along Alaska’s Kuskokwim River caused ice jams and flooding.

Posted May 14, 2026

Earth

SWOT (Surface Water and Ocean Topography)

SWOT Mission Unlocks a New View of Our Waterways

Explore how rivers move, change, and sustain life across the planet with SWOT data.

Posted March 23, 2026

Earth Observatory

Planetary Analogs

A Most Unusual Lake

Lake Unter-See in Antarctica, sealed beneath thick ice, contains unusually high levels of dissolved oxygen and cone-shaped microbial reefs resembling some of Earth’s oldest fossils.

Posted March 11, 2026

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COSI (Compton Spectrometer and Imager)

1

Stars

155

Johnson's Mission Control Center

6

MAIA (Multi-Angle Imager for Aerosols)

1

Shuttle Radar Topography Mission (SRTM)

2

Curiosity (Rover)

29

STS-107

2

EscaPADE (Escape and Plasma Acceleration and Dynamics Explorers)

7

Mars Campaign Development Division

2

National Advisory Committee for Aeronautics (NACA)

6

Exoplanet Atmosphere

12

THEMIS-ARTEMIS (Time History of Events and Macroscale Interactions During Substorms - Acceleration, Reconnection, Turbulence and Electrodynamics of Moon's Interaction with the Sun)

1

Gemini VI

1

William A. Anders

2

Advanced Air Mobility

19

Artificial Intelligence (AI)

17

People of Armstrong

4

Revolutionary Vertical Lift Technology

3

4

Learning Resources

145

COBE (Cosmic Background Explorer)

1

Space Communications Technology

21

Earth Day

5

Super-Earth Exoplanets

10

3

2

Floods

10

VERITAS (Venus Emissivity, Radio Science, InSAR, Topography & Spectroscopy)

3

Green Aviation Tech

17

Analog Field Testing

7

Blogs

226

Prizes, Challenges & Crowdsourcing

6

Sea Ice

10

Technology for Space Travel

18

Fundamental Physics

2

Visible Infrared Imaging Radiometer Suite (VIIRS)

9

1

Apollo 11

6

Opportunities to Contribute to NASA Missions & Get Involved

29

C-130

1

40

Human Health and Performance

31

Kathleen Rubins

2

Cassini

10

SmallSats Program

5

Deep Space Network

11

STS-51D

1

Marshall Astrophysics

45

Neptune

2

7

Transformative Aeronautics Concepts Program

24

Goddard Institute for Space Studies

17

XRISM (X-Ray Imaging and Spectroscopy Mission)

6

Aeronautics STEM

3

Astrophysics Explorers Program

4

Physical Sciences Program

4

Ronald E. McNair

1

Ionosphere

10

Low Earth Orbit Economy

22

Commercial Supersonic Technology

15

Spacesuits

8

Earth's Vital Signs

1

Sustainable Flight National Partnership

4

MUREP

10

Office of the Chief Scientist (OCS)

1

Stellar Evolution

3

Ellington Field

1

149

The Future of Commercial Space

13

Gamma Rays

10

2

Armstrong Flight Research Center

143

Owen K. Garriott

1

Read it!

3

41

Landsat 7

1

Charles O. Hobaugh

1

Solar System Ambassadors

1

Donald R. Pettit

4

STS-99

1

Media Resources

1

Nicole P. Stott

1

Featured Careers

5

University Innovation

14

Grades 5 - 8 for Educators

13

Air Traffic Management and Safety

2

Becoming an Astronaut

5

Planetary Science Division

66

SBIR STTR

8

Jeanette J. Epps

4

Lunar Surface Technology Research

2

Cosmic Microwave Background

1

4

Joint Agency Satellite Division

4

Manufacturing, Materials, 3-D Printing

1

SimLabs

2

CYGNSS (Cyclone Global Navigation Satellite System)

1

STS-113

1

Euclid

8

Mars Climate Orbiter

1

National Space Council Users' Advisory Group (NSpC UAG)

1

Exoplanet Detection Methods

7

Thomas P. Stafford

3

Gemini XI

1

William C. McCool

1

Advanced Air Transport Technology

7

Asian American and Native Hawaiian Pacific Islander Heritage

5

People of Goddard

80

Richard A. Mastracchio

1

Infrared Space Observatory (ISO)

1

Leland D. Melvin

1

CoECI News

20

Space Flight Awareness (SFA)

1

Earth Observatory

144

Supermassive Black Holes

21

Mini-RF Instrument

1

4

For Colleges & Universities

46

Vertical Motion Simulator

1

Greenhouse Gases

9

8

Blue Ghost (lander)

4

Prizes, Challenges & Crowdsourcing News

10

Technology Highlights

39

FutureFlight Central

1

Volcanoes

14

HERA (Human Exploration Research Analog)

7

Apollo 12

3

Opportunity (Rover)

4

C-20A

3

Quesst: The Flights

5

Human Lander Challenge

2

Kathryn C. Thornton

1

Cell and Molecular Biology

2

Snow

14

Deep Space Optical Communications (DSOC)

7

STS-61

1

Marshall Earth Sciences

29

Neptune-Like Exoplanets

8

7

TREAT Astronauts Act

1

Goddard Medical and Environmental Division

1

1

Aeronautics Technology

8

Astrophysics Pioneers

2

1

Rosalind Franklin (Rover)

1

IRIS (Interface Region Imaging Spectrograph)

1

Low-Earth Orbit Economy

10

Common Exploration Systems Development Division

4

SpaceX Commercial Resupply

24

Earth-like Exoplanets

6

Swift Boost Mission

3

MUSE (Multi-slit Solar Explorer)

1

Office of the General Counsel (OGC)

36

2

Stellar-mass Black Holes

5

Elliptical Galaxies

6

NASA Home & City

1

The Great Red Spot

1

Gamma-Ray Bursts

13

WB-57

2

Armstrong Test Facility (Plum Brook)

5

6

Red Dwarfs

1

29

Landsat 8 / LDCM (Landsat Data Continuity Mission)

29

Christina H. Koch

23

Solar System Exploration Research Virtual Inst.

3

Dragonfly

8

Student Opportunities

1

Meetings, Workshops & Conferences

1

Night Sky Network

37

Fermi Gamma-Ray Space Telescope

16

University Leadership Initiative

6

13

Air Traffic Solutions

14

Benefits Back on Earth

3

Planets

30

Science & Research

245

Jessica U. Meir

3

Lunar Trailblazer

4

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