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NASA Engineering and Safety Center

TB 26-09 Measured Hammer-Tap Inputs

For more information, contact Joel W. Sills, Langley Research Center, joel.w.sills@nasa.gov. Download the PDF version An instrumented hammer test does not require an idealized single half-sine waveform.
Posted November 2, 2026
CHAPEA Mission 2
Crew Health and Performance Exploration Analog (CHAPEA)

NASA’s CHAPEA Crew “Returns” to Earth

The four-member Crew Health and Performance Exploration Analog (CHAPEA) crew poses outside for the first time in more than a year following the end of their simulated Mars journey on Oct. 31, 2026. Crew members Matthew Montgomery (left), James Spicer (middle left), Ross Elder (middle right), and Ellen Ellis (right) spent more than a year […]
Posted November 2, 2026
Earth's Moon
Leonids
Skywatching
Skywatching Tips
The Solar System

What’s Up: November 2026 Skywatching Tips from NASA

Meteor Showers, a Spacecraft Milestone, and a Supermoon Catch Taurid and Leonid meteors, spot Mars near Jupiter, celebrate Voyager 1’s light-day milestone, and watch November’s supermoon. Skywatching Highlights Transcript A month of meteor showers … a close pairing of Mars and Jupiter … and a supermoon! That’s What’s Up for November.
Posted November 2, 2026
Commercial Space
Commercial Resupply
International Space Station (ISS)
ISS Research
Johnson Space Center
Kennedy Space Center
Northrop Grumman Commercial Resupply

NASA Invites Media to Northrop Grumman CRS-25 Station Resupply Launch

Media accreditation is open for the next launch to deliver NASA science investigations, supplies, and equipment to the International Space Station. A Northrop Grumman Cygnus XL spacecraft will launch in November to the orbital laboratory on a SpaceX Falcon 9 rocket for NASA.
Posted November 2, 2026
Astrophysics
Astrophysics Division
Galaxies
Goddard Space Flight Center
Hubble Space Telescope
Sensing the Universe & Multimessenger Astronomy
Stars
Supernovae

NASA’s Hubble Uncovers Case of Missing Oxygen in Nearby Dwarf Galaxies

NASA’s Hubble studied 37 nearby dwarf galaxies and found that much of the oxygen they expected to see is missing. 
Posted November 2, 2026
APOD

APOD: 2026 November 2 – A Long Cloud on Mars

APODScienceAPODAPOD: 2026 November 2 – A…Today’s APODArchiveSubmissionsIndexSearchCalendarRSSEducationAboutDiscuss  APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Posted November 2, 2026
Earth Observatory
Landsat 8 / LDCM (Landsat Data Continuity Mission)
Topography
Vegetation

Pennsylvania’s Grand Canyon

Amid the warm hues of fall foliage, Pine Creek Gorge forms a deep scar in the Allegheny Plateau.
Posted November 2, 2026
APOD

APOD: 2026 November 1 – Colors of the Moon

APODScienceAPODAPOD: 2026 November 1 –…Today’s APODArchiveSubmissionsIndexSearchCalendarRSSEducationAboutDiscuss  APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Posted November 1, 2026
APOD

APOD: 2026 October 31 – Night on a Spooky Planet

APODScienceAPODAPOD: 2026 October 31 –…Today’s APODArchiveSubmissionsIndexSearchCalendarRSSEducationAboutDiscuss  APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Posted October 31, 2026
General
Aeronautics
Astronauts
Human Spaceflight Mission Directorate
Kennedy Space Center
Moon Base
Nancy Grace Roman Space Telescope
Quesst (X-59)
Research and Technology Mission Directorate
Science Mission Directorate
Space Nuclear Propulsion (SNP)

NASA Releases MAX POWER Key Events for Media, Participants

America’s newest aerospace expo and air show – MAX POWER – is fast approaching, and NASA has announced key events beginning Friday, Nov. 6, and running through Sunday, Nov. 8, hosted on and near the agency’s Kennedy Space Center in Florida. Through multiple park experiences at MAX POWER, NASA and a variety of external collaborators […]
Posted October 30, 2026
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2
Heliosphere
6
Science Activation
70
SpaceX Commercial Resupply
29
Apollo 14
2
CADRE (Cooperative Autonomous Distributed Robotic Exploration)
3
Magellanic Clouds
3
NASA en español
61
Hubble Space Telescope
252
Jupiter Moons
23
Technology for Living in Space
7
Centennial Challenges
15
Visible / Optical Light
1
Deimos
1
Orion Program
28
Quesst: The Team
4
Expedition 72
7
Goddard Institute for Space Studies
17
Snow
14
Aerosciences Evaluation Test Capabilities
4
STS-51D
1
Atmospheric Composition
1
Martian Moon Exploration (MMX)
4
NIAC Studies
33
Investigation of Convective Updrafts (INCUS)
1
Life on Earth
5
Transformational Tools Technologies
13
Communicating and Navigating with Missions
35
XMM-Newton (X-ray Multi-Mirror Newton)
3
Earth-like Exoplanets
6
Northrop Grumman Commercial Resupply
26
Jasmin Moghbeli
11
Lunar Explorer Instrument for space biology Applications (LEIA)
1
Underway Recovery Test 11
1
Courses & Curriculums for Professionals
1
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7
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10
Euclid
9
Gamma Rays
11
Seasat
1
2017 Solar Eclipse
3
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3
Artemis
396
Mark T. Vande Hei
1
NASA Space Technology Graduate Research Opportunities (NSTGRO)
2
Hybrid Thermally Efficient Core
3
Landsat
17
The Big Bang
4
Christopher L. Williams
8
Water on Earth
39
Drones & You
26
Pandora
1
Redstone 3 (Freedom 7)
1
Featured Careers
5
Grades 5 - 8 for Educators
13
Solar System Exploration Research Virtual Inst.
3
Airborne Science
30
STS-96
1
Benefits to Science
1
Michael R. Barratt
2
Greenhouse Gases
9
Space Grant
2
Andromeda Galaxy
8
Super-Earth Exoplanets
10
Brand Partnerships
1
Moon Base
17
Office of Strategic Infrastructure (OSI)
2
Johnson Space Center
436
Sustainable Flight Demonstrator
6
VERITAS (Venus Emissivity, Radio Science, InSAR, Topography & Spectroscopy)
3
Dark Matter
19
Opportunities For Educators to Get Involved
23
Project Mercury
4
Exoplanet Discoveries
16
Gemini XI
1
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1
Advanced Capabilities for Emergency Response Operations
1
STS-113
1
Asteroids
48
Mars Reconnaissance Orbiter (MRO)
18
Neil Gehrels Swift Observatory
19
In-Situ Resource Utilization (ISRU)
2
Launch Services Office
16
THEMIS-ARTEMIS (Time History of Events and Macroscale Interactions During Substorms - Acceleration, Reconnection, Turbulence and Electrodynamics of Moon's Interaction with the Sun)
1
Comet 3IAtlas
1
William A. Anders
2
Earth Science
223
People of Space Operations
2
Rings of Saturn
11
For Colleges & Universities
53
Planetary Defense
23
Russell L. Schweickart
2
FutureFlight Central
1
HelioSwarm
1
Science for Everyone
2
SPHEREx (Spectro-Photometer for the History of the Universe and Ices Explorer)
27
Apollo 15
1
CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite)
1
Magnetars
5
NASA Engineering & Safety Center Academy
1
Human Dimensions
21
Katherine Johnson IV and V Facility
4
Technology for Space Travel
18
Centennial Challenges News
9
Visible Infrared Imaging Radiometer Suite (VIIRS)
15
Deniz Burnham
1
Orionids
1
Quesst: The Vehicle
17
Expedition 73
5
Goddard Medical and Environmental Division
1
Social Media
6
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7
STS-61
1
Atmospheric Temperature
1
Materials Science
3
NICER (Neutron star Interior Composition Explorer)
8
Io
5
LISA (Laser Interferometer Space Antenna)
4
Transformative Aeronautics Concepts Program
28
Community Partners
4
XRISM (X-Ray Imaging and Spectroscopy Mission)
7
Earthquakes
5
Nova-C (Lander)
1
Jason-CS (Continuity of Service) / Sentinel-6
6
Lunar Reconnaissance Orbiter (LRO)
22
University Innovation
17
Crab Nebula
6
Emission Nebulae
5
Polar
1
Eugene A. Cernan
1
Gamma-Ray Bursts
15
SeaWiFS (Sea-viewing Wide Field-of-view Sensor)
1
2023 Solar Eclipse
9
Stellar-mass Black Holes
5
Artemis 1
17
Mars
118
NASA STEM Projects
9
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6
Landsat 1
1
The Future of Commercial Space
14
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1
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2
Droughts
7
Pandora Mission
2
Reflection Nebulae
3
Fermi Gamma-Ray Space Telescope
16
Grades 9 - 12
16
Solar Wind
14
Airspace Operations and Safety Program
16
STS-99
1
Bennu
6
Michael S. Hopkins
1
Ground Water
1
Space Launch System (SLS)
120
Anil Menon
5
Supermassive Black Holes
22
Brewster H. Shaw Jr.
1
Moons
4
Office of Technology, Policy and Strategy (OTPS)
21
Johnson's Mission Control Center
6
Sustainable Flight National Partnership
4
Vertical Motion Simulator
1
Dark Matter & Dark Energy
9
Opportunities For International Participants to Get Involved
13
Protostars
21
Exoplanet Exploration Program
4
General
679
SkyFall
2
Advanced Plant Habitat (APH)
3
STS-125
1
Astrobiology
41
Mars Sample Return (MSR)
13
NEO Surveyor (Near-Earth Object Surveyor Space Telescope)
12
Infrared Light
4
Launch Services Program
52
Thomas P. Stafford
3
Comets
17
William C. McCool
1
Earth Science Division
89
Perseids
2
Robert A. R. Parker
1
For Educators
13
Planetary Defense Coordination Office
27
S3VI
1
G. Reid Wiseman
26
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1
Science in the Air
15
Spinoffs
46
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1
Candidate Astronauts
15
Magnetosphere
5
NASA Engineering and Safety Center
54
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31
Kathleen Rubins
2
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41
Center Innovation Fund
3
Volcanoes
18
Developmental, Reproductive and Evolutionary Biology
1
OSAM-1 (On-Orbit Servicing, Assembly, and Manufacturing 1)
1
Radial Velocity
2
Expedition 74
4
Goddard Space Flight Center
733
SOFIA (Stratospheric Observatory for Infrared Astronomy) / 747-SP
2
AeroSpace Frontiers
59
STS-64
2
Atmospheric Waves Experiment (AWE)
3
Matthew Dominick
5
Nichole Ayers
4
Ionosphere
11
LOFTID (Low-Earth Orbit Flight Test of an Inflatable Decelerator)
1
TREAT Astronauts Act
1
Compton Gamma Ray Observatory (CGRO)
1
Zena Cardman
1
Eclipses
46
Michoud Assembly Facility
35
NuSTAR (Nuclear Spectroscopic Telescope Array)
3
Jeanette J. Epps
4
Lunar Science
18
University Leadership Initiative
7
Craters
3
EMIT (Earth Surface Mineral Dust Source Investigation)
7
Polarimeter to Unify the Corona and Heliosphere (PUNCH)
11
Europa
29
Ganymede
1
Sensing the Universe & Multimessenger Astronomy
5
2024 Solar Eclipse
46
STEM Engagement at NASA
78
Artemis 2
207
Mars 2020
41
NASA+
6
I Am Artemis
42
Landsat 4
1
The Great Red Spot
1
Citizen Science
108
WB-57
3
Dust Storms
4
Parker Solar Probe (PSP)
10
Remote Sensing Technology
3
Find Your Place
11
Grades 9-12 for Educators
14
Sonifications
1
Alan B. Shepard Jr.
1
Student Opportunities
1
BepiColombo
1
For Kids and Students
32
Gulfstream G-III
1
Space Nuclear Propulsion (SNP)
6
Animal Biology
1
Supermoons
1
Brown Dwarfs
12
MOSAICS
1
Office of the Chief Financial Officer (OCFO)
4
Joint Agency Satellite Division
4
Swift Boost Mission
5
Vesta
2
DART (Double Asteroid Redirection Test)
9
Opportunities For Researchers to Get Involved
1
Psyche Asteroid
8
Exoplanet Science
29
Geospace Dynamics Constellation (GDC)
1
Skylab
6
Advanced Space Suits
2
STS-127
1
Astrogram
8
Mars Science Laboratory (MSL)
30
NEOWISE
8
Infrared Space Observatory (ISO)
1
Leadership
16
Titan
5
Commercial Crew
111
William R. Pogue
1
Earth Science Technology Office
11
Perseverance (Rover)
43
Robert D. Cabana
2
Ecostress (ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station)
3
Planetary Environments & Atmospheres
8
SAGE III (Stratospheric Aerosol and Gas Experiment)
1
Gaia
1
HERA (Human Exploration Research Analog)
7
Science Instruments
9
Spiral Galaxies
79
Apollo 8
3
Carbon Cycle
6
Magnetospheric Multiscale (MMS)
2
NASA Headquarters
146
Human Lander Challenge
2
Kathryn C. Thornton
1
Technology Research
11
Center of Excellence for Collaborative Innovation (CoECI)
57
Voyager 1
8
Didymos & Dimorphos
2
OSIRIS-APEX (Origins, Spectral Interpretation, Resource Identification, and Security – Apophis Explorer)
3
Radiation
1
Expedition 75
1
Goddard Technology
15
SOHO (Solar and Heliospheric Observatory)
6
Aerospace Safety Advisory Panel
2
STS-65
1
Audio
6
MAVEN (Mars Atmosphere and Volatile EvolutioN)
18
Nicole Aunapu Mann
3
IRIS (Interface Region Imaging Spectrograph)
1
Loral O'Hara
8
Trojan Asteroids
5
Constellations
1

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