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NASA’s NICER Catches Record-setting X-ray Burst

NICER’s Night Moves Trace the X-ray Sky

NASA’s Fermi Satellite Clocks ‘Cannonball’ Pulsar Speeding Through Space

NASA’s Fermi Mission Energizes the Sky With Gamma-ray Constellations

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HWO SIG Seminar, 11 Feb 2026

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Habitable Worlds Observatory SIG Seminar, 11 Feb 2026

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Biospheric Science Branch Page

Global Phytoplankton Distribution shown form a satellite image. a part of are microscopic organisms that live in watery environments, both salty and fresh. Some phytoplankton are bacteria, some are protists, and most are single-celled plants.

Atmospheric Science Branch Page

An orbital sunrise illuminates Earth's atmosphere and cloud tops in this photograph captured from the International Space Station as it orbited 264 miles above the Czech Republic in Eastern Europe.