Search

NASA+

Search

Suggested Searches

Climate Change
Artemis
Expedition 64
Mars perseverance
SpaceX Crew-2
International Space Station
View All Topics A-Z

Home
Missions
Humans in Space
Earth
The Solar System
The Universe
Science
Aeronautics
Technology
Learning Resources
About NASA
Español

News & Events
Multimedia
NASA+

Featured

Graphic advertising International Observe the Moon Night.

Celebrate International Observe the Moon Night with NASA

article3 days ago

A group of 10 men and women wearing assorted jeans and button-down shirts hold up rock samples, with a forest in the background.

Summer Training: Catching Up With NASA’s Astronaut Candidates

article4 days ago

(April 6, 2026) – Poynting crater and Keeler crater are visible side by side in the lower right portion of this image of the Moon’s far side highlands. Poynting, positioned above, is a large impact crater with a well-defined rim and relatively smooth interior, indicative of material that has settled following the initial impact. Just below it, Keeler crater appears slightly smaller, with a sharply outlined rim and a more textured interior shaped by subsequent impacts and ejecta. Both features lie within the densely cratered far side highlands, preserving a record of ancient impacts that have shaped the lunar surface over billions of years.

NASA Boosts Open Science, Data Sharing with Artemis Accords

article1 week ago

Missions

Search All NASA Missions
A to Z List of Missions
Upcoming Launches and Landings
Spaceships and Rockets
Communicating with Missions
Artemis
James Webb Space Telescope
Hubble Space Telescope
International Space Station
OSIRIS-Rex

Humans in Space

Why Go to Space
Astronauts
Commercial Space
Destinations
Spaceships and Rockets
Living in Space

Earth

Explore Earth Science
Climate Change
Earth, Our Planet
Earth Science in Action
Earth Multimedia
Earth Data
Earth Science Researchers

The Solar System

The Sun
Mercury
Venus
Earth
The Moon
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto & Dwarf Planets
Asteroids, Comets & Meteors
The Kuiper Belt
The Oort Cloud
Skywatching

The Universe

Exoplanets
The Search for Life in the Universe
Stars
Galaxies
Black Holes
The Big Bang
Dark Energy
Dark Matter

Science

Earth Science
Planetary Science
Astrophysics & Space Science
The Sun & Heliophysics
Biological & Physical Sciences
Lunar Science
Citizen Science
Astromaterials
Aeronautics Research
Human Space Travel Research

Aeronautics

Science in the Air
NASA Aircraft
Flight Research Innovation
Supersonic Flight
Air Traffic Solutions
Green Aviation Tech
Drones & You

Technology

Technology Transfer & Spinoffs
Space Travel
Living in Space
Lunar Surface Technology
Manufacturing and Materials
Robotics
Science Instruments
Computing

Learning Resources

For Kids and Students
For Educators
For Colleges and Universities
For Professionals
Science for Everyone
Requests for Exhibits, Artifacts, Speakers & Flyovers
STEM Engagement at NASA

About NASA

NASA's Impacts
Centers and Facilities
Directorates
Organizations
People of NASA
Careers
Internships
Our History
Doing Business with NASA
Get Involved
Contact

NASA en Español

Ciencia
Aeronáutica
Ciencias Terrestres
Sistema Solar
Universo

News & Events

News Releases
Recently Published
Video Series on NASA+
Podcasts & Audio
Blogs
Newsletters
Social Media
Media Resources
Events
Upcoming Launches & Landings
Virtual Guest Program

Multimedia

NASA+
Images
NASA Live
NASA Apps
Podcasts
Image of the Day
e-Books
3D Resources
Interactives
STEM Multimedia
NASA Brand & Usage Guidelines

Featured

NASA Activates Roman’s Primary Instrument, Checks Out Coronagraph

NASA Activates Roman’s Primary Instrument, Checks Out Coronagraph

article 3 days ago

After Latest Swing Past Sun, NASA’s Parker Solar Probe Checks in

After Latest Swing Past Sun, NASA’s Parker Solar Probe Checks in

article 1 week ago

Highlights

NASA’s Integrated Medical Model (IMM)

NASA’s Integrated Medical Model (IMM)

article 2 days ago

Summer Training: Catching Up With NASA’s Astronaut Candidates

Summer Training: Catching Up With NASA’s Astronaut Candidates

article 4 days ago

Astronaut Fact Book

Astronaut Fact Book

article 1 week ago

Highlights

EVS-4

EVS-4

article 18 hours ago

Summer Goes Out With a Heat Dome

Summer Goes Out With a Heat Dome

article 1 day ago

Amendment 74: A.14 Atmosphere Research Program Due Date Delay and Clarification Regarding the use of Generative AI

Amendment 74: A.14 Atmosphere Research Program Due Date Delay and Clarification Regarding the use of Generative AI

article 2 days ago

Highlights

Helio and You: A Fresh Perspective on the Sun

Helio and You: A Fresh Perspective on the Sun

article 1 day ago

NASA’s Moon Orbiter Spots New, ‘Once-in-Century’ Moon Crater

NASA’s Moon Orbiter Spots New, ‘Once-in-Century’ Moon Crater

article 2 days ago

NASA’s Integrated Medical Model (IMM)

NASA’s Integrated Medical Model (IMM)

article 2 days ago

Featured

NASA’s Hubble Spots an Out-of-Sync Galaxy

NASA’s Hubble Spots an Out-of-Sync Galaxy

article 1 hour ago

Newfound ‘Baby’ Planet Smashes Record for Youngest Known World

Newfound ‘Baby’ Planet Smashes Record for Youngest Known World

article 2 days ago

Help Refine Data from Space Telescopes with Artifact InSPECtor

Help Refine Data from Space Telescopes with Artifact InSPECtor

article 7 days ago

Highlights

NASA’s Hubble Spots an Out-of-Sync Galaxy

NASA’s Hubble Spots an Out-of-Sync Galaxy

article 1 hour ago

EVS-4

EVS-4

article 18 hours ago

Helio and You: A Fresh Perspective on the Sun

Helio and You: A Fresh Perspective on the Sun

article 1 day ago

Highlights

Passion Meets Precision at NASA’s Flight Research Lab

Passion Meets Precision at NASA’s Flight Research Lab

article 2 days ago

NASA Johnson Pilots Chase Moon’s Shadow for Eclipse Science

NASA Johnson Pilots Chase Moon’s Shadow for Eclipse Science

article 3 weeks ago

NASA Selects University Teams to Help Advance Aviation Research

NASA Selects University Teams to Help Advance Aviation Research

article 4 weeks ago

Highlights

Helio and You: A Fresh Perspective on the Sun

Helio and You: A Fresh Perspective on the Sun

article 1 day ago

NASA Celebrates Restoration of Guam Station Damaged by Typhoon Mawar

NASA Celebrates Restoration of Guam Station Damaged by Typhoon Mawar

article 2 days ago

NASA’s Life-Saving Technology Where Cell Signals Can’t Go

NASA’s Life-Saving Technology Where Cell Signals Can’t Go

article 1 week ago

Featured

NASA’s Integrated Medical Model (IMM)

NASA’s Integrated Medical Model (IMM)

article 2 days ago

From the Corps to the Cosmos, featuring Jaden Caradine

From the Corps to the Cosmos, featuring Jaden Caradine

article 1 week ago

1,000 Museum Visitors Dive Into NASA Sea Level Science on World Ocean Day

1,000 Museum Visitors Dive Into NASA Sea Level Science on World Ocean Day

article 1 week ago

Featured

NASA Answers President’s Call to Establish United States Space Academy

NASA Answers President’s Call to Establish United States Space Academy

article 1 week ago

NASA Calls for Proposals to Accelerate Lunar Surface Technologies

NASA Calls for Proposals to Accelerate Lunar Surface Technologies

article 1 week ago

NASA Names Two Artemis II Astronauts to Emeritus Program

NASA Names Two Artemis II Astronauts to Emeritus Program

article 1 week ago

Highlights

La NASA anuncia la cobertura de la misión lunar Artemis II

La NASA anuncia la cobertura de la misión lunar Artemis II

article 6 months ago

Agenda diaria de la misión a la Luna de Artemis II de la NASA

Agenda diaria de la misión a la Luna de Artemis II de la NASA

article 6 months ago

La NASA refuerza Artemis: añade una misión y perfecciona su arquitectura general

La NASA refuerza Artemis: añade una misión y perfecciona su arquitectura general

article 7 months ago

Sitemap

May 20, 2004

Home
Sitemap
2004
05
May 20, 2004

Seasonal Carbon Monoxide Measurements
APOD: 2004 May 20 – Sharpless 140

National Aeronautics and Space Administration

NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.

About NASA's Mission

Home
News & Events
Multimedia
NASA+
Missions
Humans in Space
Earth
The Solar System
The Universe
Science
Aeronautics
Technology
Learning Resources
About NASA
NASA en Español (opens in new tab)

Follow NASA

More NASA Social Accounts
NASA Newsletters

Sitemap
For Media
Privacy Policy
FOIA
No FEAR Act
Office of the IG (opens in new tab)
Budget & Annual Reports
Agency Financial Reports
Contact NASA
Accessibility

Responsible NASA Official:

Abigail Bowman

Was this page helpful?

Δ

Was this page helpful?

Yes

No