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It is with a heavy heart that I announce that NASA Earth Science Communications has directed The Earth Observer to conduct an orderly...

An Intertwined History: The Earth Observer and EOS The Earth Observer, a newsletter issued for more than 36 years, will release its last online...

Explore This Section Earth Earth Observer Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam Announcements More Archives Conference Schedules Style Guide 27 min read Terra: The End of An Era Introduction Launched into the night...

Introduction The Clouds and the Earth’s Radiant Energy System (CERES) was initially designed in the late-1980s and early-1990s as a facility instrument for NASA’s...

NASA astronauts will conduct a pair of spacewalks in January outside of the International Space Station to prepare for the installation of a...

Mid-infrared data from NASA’s James Webb Space Telescope (in white, gray, and red) and X-ray data from NASA’s Chandra X-ray Observatory (in blue)...

Listen to this audio excerpt from Jen Madsen and Trey Perryman, leads of the Orion Mission Evaluation Room for the Artemis II mission: Your...

In this Oct. 20, 2025, photo, tiny ball bearings surround a larger central bearing during the Fluid Particles experiment, conducted inside the Microgravity...