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Earth Science

The Earth Observer: Offering Perspectives from Space through Time

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

Terra: The End of An Era

Introduction Launched into the night sky more than 26 years ago, on Dec.
Posted December 30, 2025
Earth Science

The Final Earth Observer Editor’s Corner: October–December 2025

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

The State of CERES: Updates and Highlights

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 Space Station Science Snapshots

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 to Preview US Spacewalks at Space Station in January

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

A Galactic Embrace

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

I Am Artemis: Jen Madsen and Trey Perryman

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
ISS Research

Studying Physics in Microgravity

In this Oct. 20, 2025, photo, tiny ball bearings surround a larger central bearing during the Fluid Particles experiment, conducted inside the Microgravity Science Glovebox (MSG) aboard the International Space Station’s Destiny laboratory module.
Posted December 26, 2025
Artemis
Artemis 2
Kennedy Space Center

Santa Visits Artemis II Rocket

Santa Claus (NASA engineer Guy Naylor) poses with NASA’s Artemis II Orion spacecraft and SLS (Space Launch System) rocket in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Dec. 11, 2025. The Orion spacecraft was stacked atop the SLS in October 2025. Set to launch in early 2026, the Artemis II […]
Posted December 24, 2025
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49
OSAM-1 (On-Orbit Servicing, Assembly, and Manufacturing 1)
1
Radial Velocity
2
Ice & Glaciers
34
Landsat 5
2
Climate Change
55
SOFIA (Stratospheric Observatory for Infrared Astronomy) / 747-SP
2
Dwarf Planets
2
STS-64
2
Matthew Dominick
5
Nichole Ayers
4
Fission Surface Power
1
TREAT Astronauts Act
1
Grades K - 4
6
Zena Cardman
1
Alan L. Bean
1
Bill Nelson
9
Planetary Defense Coordination Office
27
S3VI
1
For Professionals
2
University Leadership Initiative
7
GUSTO (Galactic/Extragalactic ULDB Spectroscopic Terahertz Observatory)
3
Anne C. McClain
4
Bruce McCandless
2
Polarimeter to Unify the Corona and Heliosphere (PUNCH)
11
Joint Polar Satellite System (JPSS)
1
Sensing the Universe & Multimessenger Astronomy
5
David R. Scott
2
STEM Engagement at NASA
78
Mars 2020
41
NASA+
6
Exoplanet Transits
11
The Great Red Spot
1
Gerald Carr
1
WB-57
3
Aeromechanics Research Facilities
1
Astromaterials
14
Parker Solar Probe (PSP)
10
Remote Sensing Technology
3
Ingenuity (Helicopter)
9
Learning Resources
158
Commercial Lunar Payload Services (CLPS)
98
Sonifications
1
Earth Surface & Interior
8
Student Opportunities
1
Michoud Assembly Facility
35
NuSTAR (Nuclear Spectroscopic Telescope Array)
3
Space Nuclear Propulsion (SNP)
6
Edward G. Gibson
1
Supermoons
1
MOSAICS
1
Office of the Chief Financial Officer (OCFO)
4
Swift Boost Mission
5
Galaxies
215
Vesta
2
Herschel Space Observatory
1
Apollo 9
2
Opportunities For Researchers to Get Involved
1
Careers
11
Psyche Asteroid
8
Human Landing System Program
36
Kennedy Space Center
292
Ceres
2
Skylab
6
Digital Information Platform
9
STS-127
1
Mars Science Laboratory (MSL)
30
NEOWISE
8
Exploration Ground Systems
37
Titan
5
GOES (Geostationary Operational Environmental Satellite)
13
William R. Pogue
1
AIM (Aeronomy of Ice in the Mesosphere)
1
Aura
2
Perseverance (Rover)
43
Robert D. Cabana
2
Irregular Galaxies
10
Low Boom Flight Demonstrator
27
Convergent Aeronautics Solutions
3
Jessica Watkins
4
Lunar Surface Innovation Initiative
11
Science Instruments
9
Cryogenic Fluid Management (CFM)
6
Spiral Galaxies
79
Enceladus
4
Magnetospheric Multiscale (MMS)
2
NASA Headquarters
146
Europa Clipper Resources
8
Technology Research
11
Gateway Program
21
Voyager 1
8
3I/ATLAS
1
Artemis 4
32
OSIRIS-APEX (Origins, Spectral Interpretation, Resource Identification, and Security – Apophis Explorer)
3
Radiation
1
Ice Giants
1
Landsat 7
1
Climate Modeling
5
SOHO (Solar and Heliospheric Observatory)
6
E-Books
5
STS-65
1
MAVEN (Mars Atmosphere and Volatile EvolutioN)
18
Nicole Aunapu Mann
3
Fission Surface Power (FSP)
2
Trojan Asteroids
5
Grades K - 4 for Educators
13
Ames Earth Science Division
1
Binary Stars
6
Planetary Environments & Atmospheres
8
SAGE III (Stratospheric Aerosol and Gas Experiment)
1
For Researchers
12
University Student Research Challenge
7
Hayabusa 2
1
APOD
93
Budget & Annual Reports
6
Potentially Hazardous Asteroid (PHA)
4
Jonny Kim
5
Sentinel-6 Michael Freilich Satellite
11
DAVINCI (Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging)
4
STEM Impacts
4
Mars Campaign Development Division
2
National Advisory Committee for Aeronautics (NACA)
6
Exoplanets
96
The Human Body in Space
4
Get Involved
58
Weather and Atmospheric Dynamics
10
Aeronáutica
13
Astronauts
117
Partner with NASA STEM
9
Research and Technology at Kennedy Space Center
16
InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport)
4
Leland D. Melvin
1
Commercial Resupply
54
Sounding Rockets
22
Earth System Observatory (ESO)
5
Studying Exoplanets
21
Microbiology
3
Ocean Circulation
1
Coronagraph
2
Space Operations Mission Directorate
60
Eileen M. Collins
2
MUREP
11
SWOT (Surface Water and Ocean Topography)
18
Galaxies, Stars, & Black Holes
79
Victor J. Glover
23
Apollo-Soyuz
1
Opportunities For Students to Get Involved
41
Psyche Mission
22
Human Research Program
31
Kepler / K2
9
Chandra X-Ray Observatory
83
Skywatching
71
Digital Transformation (DT)
7
STS-128
1
Marshall Astrophysics
49
Neptune
3
Exploration Park
2
TOPEX / Poseidon (ocean TOPography EXperiment)
2
GOES-R
3
Wind Mission
2
Air Mobility Pathfinders project
6
Auroras
14
Phobos
5
Robert L. Crippen
1
ISS Research
308
Low Earth Orbit Economy
24
SAGE-III Meteor-3M (Stratospheric Aerosol and Gas Experiment III on Meteor-3M)
1
Jet Propulsion Laboratory
293
Lunar Surface Technology Research
3
Science Mission Directorate
238
Cryosphere
8
Spirit (Rover)
5
Energy Balance
1
MAIA (Multi-Angle Imager for Aerosols)
4
NASA History
153
Events
20
Technology Transfer
51
Gateway Space Station
28
Voyager 2
7
AcrimSat (Active Cavity Irradiance Monitor Satellite)
1
Artemis 5
8
OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer)
18
Radioisotope Power Systems (RPS)
16
ICESat (Ice, Clouds and Land Elevation Satellite)
1
Landsat 8 / LDCM (Landsat Data Continuity Mission)
38
Climate Science
7
Sojourner (Rover)
2
E. Michael Fincke
1
STS-66
1
Media Resources
1
Nicole P. Stott
1
Flight Demonstrations and Capabilities
2
Tropospheric Emissions: Monitoring of Pollution (TEMPO)
11
GRAIL (Gravity Recovery And Interior Laboratory)
1
Ames Research Center
241
Biological & Physical Sciences
47
Planetary Geosciences & Geophysics
10
Supernova Remnants
8
Former Astronauts
18
Uranus
7
Heat & Radiation
5
Apollo
14
Office of the Chief Health and Medical Officer (OCHMO)
7
BurstCube
4
PREFIRE (Polar Radiant Energy in the Far-InfraRed Experiment)
8
Hi-Rate Composite Aircraft Manufacturing
4
José M. Hernández
1
Carl E. Walz
1
Sentinel-6B
8
Dawn
3
Stennis Space Center
118
Mars Climate Orbiter
1
National Space Council Users' Advisory Group (NSpC UAG)
1
Exosphere
2
The Kuiper Belt
6
Glenn History
29
What We Do
10
Aeronautics
200
Astronomy
4
Partner With Us
9
Research and Technology Mission Directorate
35
Integrated Aviation Systems Program
22
Lenticular Galaxies
4
Commercial Space
107
Sounding Rockets Program
16
Earth Visualization & Mapping
9
Subsonic Flight Demonstrator
4
Mini-RF Instrument
1
Ocean Surface Topography Mission (OSTM) / Jason-2
1
Coronal Diagnostic Experiment (CODEX)
3
Space Shuttle
20
El Niño - Southern Oscillation
4
MUSE (Multi-slit Solar Explorer)
1
System-Wide Safety
7
Galaxies, Stars, & Black Holes Research
42
Video Series
4
Apophis
2
Opportunities For U.S. Citizens to Get Involved
5
Pulsars
14
Human Space Travel Research
2
Kjell N. Lindgren
4
Chandrayaan-1
1
Skywatching Tips
39
Discovery Program
2
STS-129
2
Marshall Earth Sciences
29
Neptune-Like Exoplanets
8
Exploration Systems Development Mission Directorate
74
Topography
24
GOES-U
4
WISE (Wide-field Infrared Survey Explorer)
11
Air Quality
8
B200
3
Photojournal
66
Robert L. Gibson
1
IXPE (Imaging X-ray Polarimetry Explorer)
18
Low-Earth Orbit Economy
10
Black History Month
7
Planetary Nebulae
13
Saturn
29
Joe H. Engle
1
Lunar Trailblazer
4
Science of Space Exploration
1
CubeSat Launch Initiative
17
Spitzer Space Telescope
10
Environmental Management Division (EMD)
8
Manufacturing, Materials, 3-D Printing
1
NASA Home & City
1
Everyday Extraordinary Stories
1
Technology Transfer & Spinoffs
49
Gemini
3
Voyager Program
6
Active Galaxies
14
Artemis Accords
61
Outer Planets & Ocean Worlds Program
1
Raja Chari
3
ICESat-2 (Ice, Cloud and land Elevation Satellite-2)
6
Landsat 9
53
Clouds
17
Solar Dynamics Observatory (SDO)
6
Early Career Faculty (ECF)
10
STS-68
1
Meetings, Workshops & Conferences
1
Night Sky Network
40
Flight Demos Capabilities
4
Tsunamis
3
Grants & Opportunities
6
Ames Research Center's Science Directorate
34