Blog

Human Health and Performance
Microorganisms and Spaceflight Spaceflight poses a risk of adverse health effects due to the interactions between microorganisms, their hosts, and their environment.
Posted December 30, 2025
Chandra X-Ray Observatory
Astrophysics
Galaxies
Galaxy clusters
Marshall Astrophysics
Marshall Space Flight Center
The Universe
Celebrate the New Year with the “Champagne Cluster,” a galaxy cluster seen in this new image from NASA’s Chandra X-ray Observatory and optical telescopes. Astronomers discovered this galaxy cluster Dec. 31, 2020.
Posted December 30, 2025
Earth Science
An Intertwined History: The Earth Observer and EOS The Earth Observer, a newsletter issued for nearly 37 years, will release its last online content at the close of 2025. This newsletter evolved in parallel with NASA’s Earth Observing System (EOS). It is almost impossible to speak of this newsletter without mentioning EOS.
Posted December 30, 2025
Earth Science
Introduction Launched into the night sky more than 26 years ago, on Dec.
Posted December 30, 2025
Earth Science
It is with a heavy heart that I announce that NASA Earth Science Communications has directed The Earth Observer to conduct an orderly shutdown of the publication. No new content will be published after Dec. 31, 2025. While the sunset of The Earth Observer is bittersweet for our team, the good news is that all […]
Posted December 30, 2025
Earth Science
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 Earth Observing System (EOS). Since its inception, NASA’s Langley Research Center (LaRC) has led this effort.
Posted December 30, 2025
Humans in Space
International Space Station (ISS)
ISS Research
2025 marks another year pushing the boundaries of scientific research aboard the International Space Station. This past year, over 750 investigations were conducted aboard the space station, supported by crewed missions and resupply vehicles delivering essential cargo and experiments to the orbiting laboratory.
Posted December 29, 2025
Humans in Space
ISS Research
Johnson Space Center
NASA astronauts will conduct a pair of spacewalks in January outside of the International Space Station to prepare for the installation of a roll-out solar array and complete other tasks. Experts from NASA will preview the spacewalks in a briefing at 2 p.m. EST Tuesday, Jan. 6, at NASA’s Johnson Space Center in Houston. Watch […]
Posted December 29, 2025
Spiral Galaxies
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) come together in this photo of colliding spiral galaxies released on Dec. 1, 2025. The pair grazed one another millions of years ago; billions of years in the future, they will merge […]
Posted December 29, 2025
I Am Artemis
Artemis 2
Orion Multi-Purpose Crew Vehicle
Orion Program
Listen to this audio excerpt from Jen Madsen and Trey Perryman, leads of the Orion Mission Evaluation Room for the Artemis II mission: During NASA’s Artemis II mission, Jen Madsen and Trey Perryman will be leading a team monitoring the Orion spacecraft as it carries four astronauts around the Moon. The team works in the […]
Posted December 29, 2025
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