CosmosObservatory
Explore
Solar System
Live
Learn
Tools
About
Cosmos Observatory
ToolsAbout
Cosmos Observatory

Explore the universe through NASA data, real-time ISS tracking, Mars rover imagery, asteroid monitoring, and comprehensive space encyclopedia. Your gateway to the cosmos.

Explore

  • APOD
  • Mars Rovers
  • Earth Imagery
  • NASA Gallery
  • ISS Tracker

Data

  • Asteroids
  • Solar System
  • Exoplanets
  • Space Weather
  • Launches

Tools

  • Glossary
  • News
  • Calculators

Legal

  • About
  • Privacy Policy
  • Terms of Use
  • Space Tools
  • Contact

Stay updated with the cosmos

Get weekly digests of APOD highlights, upcoming launches, and space events.

© 2026 Cosmos Observatory. All rights reserved. Built with for space enthusiasts.

This website is not affiliated with, maintained, authorized, endorsed by, or in any way officially connected with NASA or any of its subsidiaries or affiliates. All NASA imagery is in the public domain unless otherwise noted. Data sourced from NASA Open APIs, Launch Library 2, and other open data services.

NASA Gallery

Explore NASA's vast collection of space images, videos, and audio from missions past and present.

  1. Home
  2. /
  3. NASA Gallery

NASA's Image and Video Library: A Visual Archive of Space Exploration

NASA's Image and Video Library is one of the most comprehensive public archives of space imagery in the world, containing over 140,000 images, videos, and audio recordings spanning more than six decades of space exploration. From the earliest Mercury and Gemini missions through the Apollo Moon landings, the Space Shuttle era, and today's cutting-edge observations from the James Webb Space Telescope, this collection documents humanity's journey into the cosmos.

The library includes imagery from diverse sources: telescopes like Hubble and Webb that capture deep-space nebulae, galaxies, and exoplanets; planetary missions like the Mars rovers ( browse Mars photos) and Cassini at Saturn; Earth observation satellites ( see EPIC imagery); astronaut photography from the ISS; and documentation of rocket launches, spacecraft assembly, and ground testing. Most NASA images are in the public domain and free to download at full resolution for educational, editorial, and personal use.

Use the search bar above to find specific subjects — try queries like "Apollo 11," "Hubble Deep Field," "Mars surface," or "astronaut EVA." You can also filter by media type (image, video, or audio). For a daily curated experience, visit the Astronomy Picture of the Day.

Showing results for "countdown demonstration"

4,365 results found - Page 5 of 182

NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

Workers stand on the surface of Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. They are...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

An engineer with Exploration Ground Systems monitors countdown demonstration activities occurring on the mobile...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

A close-up view of the base of the mobile launcher for Artemis I with the two side flame deflectors positioned...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

Special ground support equipment is used to position one of two side flame deflectors underneath the mobile launcher...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

Special ground support equipment is used to position one of two side flame deflectors underneath the mobile launcher...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

Special ground support equipment is used to move the side flame deflectors into place during a countdown...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

Special ground support equipment is used to move the side flame deflectors into place during a countdown...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

A close-up view of the base of one of the side flame deflectors positioned underneath the mobile launcher for...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

Special ground support equipment is used to position the two side flame deflectors underneath the mobile launcher...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

Special ground support equipment is used to move the side flame deflectors into place during a countdown...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

Special ground support equipment is used to move the side flame deflectors into place during a countdown...

KSC
NASA image: EGS Launch Countdown Demonstration at Pad 39B
Image
Oct 23, 2020

EGS Launch Countdown Demonstration at Pad 39B

Technicians help move the side flame deflectors into place during a countdown demonstration test using the mobile...

KSC
NASA image: STS-4 crew takes break during CDDT for STS-4
Image
Jun 14, 1982

STS-4 crew takes break during CDDT for STS-4

Astronauts Thomas K. Mattingly, II., right, and Henry Hartsfield, Jr. pose for news photographers in front of the...

JSC
NASA image: STS-58 crew at KSC for countdown demonstration
Image
Sep 20, 1993

STS-58 crew at KSC for countdown demonstration

S93-45003 (20 Sept 1993) --- Posing for a crew portrait, in front of the Space Shuttle Columbia at Launch Pad 39B,...

JSC
NASA image: APOLLO XII - COUNTDOWN DEMONSTRATION TEST (CDDT) - KSC
Image
Oct 28, 1969

APOLLO XII - COUNTDOWN DEMONSTRATION TEST (CDDT) - KSC

S69-56596 (28 Oct. 1969) --- A nighttime, ground-level view of Pad A, Launch Complex 39, Kennedy Space Center (KSC)...

JSC
NASA image: APOLLO XI - PRELAUNCH - COUNTDOWN DEMONSTRATION TEST (CDDT) - KSC
Image
Jul 1, 1969

APOLLO XI - PRELAUNCH - COUNTDOWN DEMONSTRATION TEST (CDDT) - KSC

Apollo XI Launch Vehicle AS-506 and Spacecraft 107, Launch Pad 39A for CDDT (Countdown Demonstration Test), includes...

JSC
NASA image: Inside KSC! for Nov. 5, 2020
Video
Nov 5, 2020

Inside KSC! for Nov. 5, 2020

The mobile launcher that will carry the Space Launch System and Orion spacecraft for NASA’s Artemis I mission rolled...

KSC
NASA image: Saturn Apollo Program
Image
Jul 9, 1969

Saturn Apollo Program

Apollo 11 crew member Michael Collins appears calm after suiting up activities for his participation in the...

MSFC
NASA image: Saturn Apollo Program
Image
Dec 18, 1968

Saturn Apollo Program

Apollo 8 astronaut William Anders, Lunar Module (LM) pilot, is suited up for the Apollo 8 mission countdown...

MSFC
NASA image: Astronaut Thomas Stafford - Countdown Demonstration Test (CDDT) - KSC
Image
May 13, 1969

Astronaut Thomas Stafford - Countdown Demonstration Test (CDDT) - KSC

S69-34330 (13 May 1969) --- Astronaut Thomas P. Stafford, Apollo 9 commander, is suited up at the Kennedy Space...

JSC
NASA image: Apollo 9 crew prepares to participate in Countdown Demonstration Test
Image
Feb 23, 1969

Apollo 9 crew prepares to participate in Countdown Demonstration Test

S69-25488 (23 Feb. 1969) --- Interior view of the White Room at Pad A, Launch Complex 39, Kennedy Space Center...

JSC
NASA image: APOLLO X ASTRONAUTS - COUNTDOWN DEMONSTRATION TEST (CDDT) - CAPE
Image
May 13, 1969

APOLLO X ASTRONAUTS - COUNTDOWN DEMONSTRATION TEST (CDDT) - CAPE

S69-34333 (13 May 1969) --- The three Apollo 10 astronauts suit up for a Countdown Demonstration Test at the Kennedy...

JSC
NASA image: SKYLAB (SL)-2 - COUNTDOWN DEMONSTRATION TEST (CDDT) - KSC
Image
May 15, 1973

SKYLAB (SL)-2 - COUNTDOWN DEMONSTRATION TEST (CDDT) - KSC

S73-25696 (15 May 1973) --- An overall view of Pad B, Launch Complex 39, Kennedy Space Center, Florida, showing the...

JSC
NASA image: Saturn Apollo Program
Image
Jul 15, 1969

Saturn Apollo Program

Seriousness exudes from launch official Miles Ross (left) of Kennedy Space Flight Center (KSC) and Major General...

MSFC
PreviousPage 5 of 100Next

Frequently Asked Questions About NASA Images

Are NASA images free to use?+
Yes, most NASA images are in the public domain and are free to use for educational, informational, and personal purposes. NASA's media usage guidelines state that NASA material is not copyrighted unless otherwise noted. However, the NASA logo and certain insignia are protected. Some images may include identifiable individuals or third-party content that requires additional permissions. Always check the specific image's usage rights and credit NASA as the source.
How many images does NASA have?+
NASA's Image and Video Library contains over 140,000 publicly accessible images, videos, and audio files spanning the agency's entire history, from the Mercury program of the 1960s to the latest James Webb Space Telescope discoveries. The collection grows daily as new missions capture imagery and archival materials are digitized. Individual mission archives, such as Mars rover photos, contain hundreds of thousands of additional images.
Can I download NASA images?+
Yes, you can download NASA images in multiple resolutions directly from this gallery. Each image detail page provides download links for original (full resolution), large (1920px), medium (960px), small (480px), and thumbnail sizes. NASA encourages the public to use these images for education, media, and personal projects. High-resolution originals are ideal for printing and professional use.

Explore More NASA Content

Astronomy Picture of the Day

Daily curated space image

Mars Rover Photos

Curiosity & Perseverance images

Earth from Space

DSCOVR EPIC daily images

Launch Schedule

Upcoming rocket launches

Space News

Mission updates & discoveries