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NASA Watches Earth’s Weight, Finds Center of Mass

How 2 US, European Satellites Are Studying Hurricanes During El Niño

NASA-developed AI Could Help Track Harmful Algae

NASA-ISRO Satellite Captures Pacific Northwest Through Clouds

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The mighty Yukon River and nearby lakes appear in red in this image produced using data recorded on June 18, 2023, by the international Surface Water and Ocean Topography (SWOT) satellite as it passed over Alaska.

This animation, created in 2012, shows the increasing clarity and detail of measurements of sea height made by successive satellite altimeters launched by NASA and other agencies over the past four decades.

Using NASA Herschel Space Observatory, astronomers have discovered that comet Hartley 2 possesses a ratio of heavy water to light, or normal, water that matches what found in Earth oceans.

This image shows differences in atmospheric water vapor relative to a normal average year in the Earth upper troposphere about 10 kilometers 6 miles above the surface.

Illustration of the twin spacecraft of the NASA/German Research Centre for Geosciences (GFZ) GGRACE-FO mission. GRACE-FO will continue tracking the evolution of Earth's water cycle by monitoring changes in the distribution of mass on Earth.

Illustration of the twin spacecraft of the NASA/German Research Centre for Geosciences (GFZ) GRACE-FO mission. GRACE-FO will continue tracking the evolution of Earth's water cycle by monitoring changes in the distribution of mass on Earth.

Illustration of the twin spacecraft of the NASA/German Research Centre for Geosciences (GFZ) GRACE-FO mission. GRACE-FO will continue tracking the evolution of Earth's water cycle by monitoring changes in the distribution of mass on Earth.

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Discover More Topics From NASA

Galaxies SIG Seminar, 6 Oct 2026

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Researchers: Help NASA Prevent Blood Clot Formation in Space

NASA astronaut Anne McClain uses an ultrasound device to scan NASA astronaut Jonny Kim aboard the International Space Station.

The Scale of the Universe – Great Debate in 1996

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The Scale of the Universe Great Debate in 1996: Program

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