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radar & radio

Eighteen photos in a grid. Each features a background of green light reminiscent of the northern lights, with clusters of red dots in the middle.
Posted inResearch Spotlights

Radar Reveals Electrical Activity in the Ionosphere

by Saima May Sidik 18 December 202416 July 2025

A new method could improve understanding of communication disruptions.

A river runs past a beaver dam in the foreground with mountains and clouds in the background.
Posted inNews

Arctic Beavers Advance North and Accelerate Permafrost Thaw

by Grace van Deelen 10 December 202410 December 2024

As beavers build dams in new areas, they impound water, warming permafrost adjacent to their ponds.

A lightning flash extending outside of a thundercloud.
Posted inEditors' Highlights

Lightning Initiating at High Altitudes May Develop Continuously

by Xiushu Qie 15 November 202412 November 2024

Recent radio observations reveal a new mode of initial lightning development in the form of continuous initial breakdown burst of several kilometers in length at high altitudes within thunderstorms.

Photo of a rocket launch
Posted inEditors' Highlights

Improvements to Measuring the Ups and Downs of the Landscape

by Dennis Baldocchi 8 November 20247 November 2024

If you are a jazz fan, you may be familiar with Ella Fitzgerald singing ‘How deep is the ocean, how high is the sky’. Using data from the Shuttle Radar Topography Mission we now know how high the land really is.

Illustration of a satellite observing various events on the Earth's surface.
Posted inEditors' Vox

Unlocking the Power of Synthetic Aperture Radar for Geosciences

by Lingsheng Meng, Chi Yan and Xiao-Hai Yan 29 October 202428 October 2024

Due to its unique ability to monitor Earth’s surface, Synthetic Aperture Radar plays a pivotal role in revolutionizing the geosciences.

A red-green-blue composite satellite view of farmland in Brazil comprising three images of a single polarization. Stream channels can be seen in white; circular and polygonal patches of land appear in a variety of colors.
Posted inScience Updates

A Cloud-Based Solution to a Radar Data Deluge

by Sargent Shriver, Franz J. Meyer, Alex Lewandowski, Eric Lundell and Dylan Palmieri 18 October 202418 October 2024

An open-science tool built to support NASA missions is making synthetic aperture radar, once the domain only of subject matter experts, more accessible for nonspecialists and real-world applications.

Maps of a storm system
Posted inNews

Putting Accessibility on the Map

Rachel Crowell, Science Writer by Rachel Crowell 7 October 20247 October 2024

New research demonstrates how to make radar maps more easily interpretable for people with color vision deficiency.

A computer simulation on a repeat loop where the viewer approaches a circular pit on the Moon, descends vertically, and then levels out to see an underground cave.
Posted inNews

Lunar Lava Tube Revealed Beneath Collapsed Pit

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 2 August 20242 August 2024

The Sea of Tranquility is home to at least one lunar lava tube, which could preserve a pristine and unweathered record of lunar volcanism.

Aerial view of the Arecibo radio telescope, a large light-colored dish set into the ground, surrounded by trees.
Posted inFeatures

Saving the Planet with Radar Astronomy

by Matthew R. Francis 19 July 202419 July 2024

Once the largest telescope in the world, Arecibo kept watch for dangerous asteroids using radar. With it gone, the world is preparing the next generation of radar observatories.

Repeating rainbow lines overlain on a grayscale topographic map of a section of Thwaites Glacier
Posted inNews

Radar Data Show Thwaites Gets a Daily Bath of Warm Seawater

by Anupama Chandrasekaran 27 June 202427 June 2024

The Doomsday Glacier, predicted to raise global sea level by more than half a meter, could be exposed to more warm ocean water than previously thought.

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