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

(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

article3 days ago

Category 5 Hurricane Melissa, one of the most powerful storms to strike the Caribbean in recent history, is pictured about 50 miles south of Jamaica in this photograph from the International Space Station as it orbited 262 miles above the Yucatan Peninsula.

How 2 US, European Satellites Are Studying Hurricanes During El Niño

article5 days ago

NASA’s Chandra Unveils Mysterious X-Ray Objects

NASA’s Chandra Unveils Mysterious X-Ray Objects

article5 days 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’s Chandra Unveils Mysterious X-Ray Objects

NASA’s Chandra Unveils Mysterious X-Ray Objects

article 5 days ago

NASA’s Hubble, Webb Find Far-out Solar System Objects ‘Remember’ Past

NASA’s Hubble, Webb Find Far-out Solar System Objects ‘Remember’ Past

article 6 days ago

NASA’s X-59 Aircraft Builds Momentum Through 25th Flight

NASA’s X-59 Aircraft Builds Momentum Through 25th Flight

article 1 week ago

Highlights

Summer Training: Catching Up With NASA’s Astronaut Candidates

Summer Training: Catching Up With NASA’s Astronaut Candidates

article 3 hours ago

Astronaut Fact Book

Astronaut Fact Book

article 6 days ago

From the Corps to the Cosmos, featuring Jaden Caradine

From the Corps to the Cosmos, featuring Jaden Caradine

article 6 days ago

Highlights

An Early Look at Fall Color in Canada

An Early Look at Fall Color in Canada

article 14 hours ago

Monterrey Amid Mountains

Monterrey Amid Mountains

article 4 days ago

Atmosphere (ROSES A.14)

Atmosphere (ROSES A.14)

article 4 days ago

Highlights

NASA, IBM Launch AI Foundation Model for Lunar Science

NASA, IBM Launch AI Foundation Model for Lunar Science

article 4 days ago

NASA’s Hubble, Webb Find Far-out Solar System Objects ‘Remember’ Past

NASA’s Hubble, Webb Find Far-out Solar System Objects ‘Remember’ Past

article 6 days ago

NASA’s Hubble Tracks New Decagon Encircling Saturn’s South Pole

NASA’s Hubble Tracks New Decagon Encircling Saturn’s South Pole

article 2 weeks ago

Featured

Help Refine Data from Space Telescopes with Artifact InSPECtor

Help Refine Data from Space Telescopes with Artifact InSPECtor

article 3 days ago

NASA’s Chandra Unveils Mysterious X-Ray Objects

NASA’s Chandra Unveils Mysterious X-Ray Objects

article 5 days ago

NASA’s Hubble Spies Superbubble Scene

NASA’s Hubble Spies Superbubble Scene

article 2 weeks ago

Highlights

CSDA Vendor – Wyvern

CSDA Vendor – Wyvern

article 5 hours ago

An Early Look at Fall Color in Canada

An Early Look at Fall Color in Canada

article 14 hours ago

CSDA Vendor – Orbital Sidekick

CSDA Vendor – Orbital Sidekick

article 3 days ago

Highlights

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

NASA Student Aviation Challenge Focuses on Nation’s Infrastructure

NASA Student Aviation Challenge Focuses on Nation’s Infrastructure

article 4 weeks ago

Highlights

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

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

article 4 days ago

Anak Krakatau Rumbles Again

Anak Krakatau Rumbles Again

article 6 days ago

NASA Technique for Manipulating Satellite Photos Now Reveals Ancient Images

NASA Technique for Manipulating Satellite Photos Now Reveals Ancient Images

article 6 days ago

Featured

From the Corps to the Cosmos, featuring Jaden Caradine

From the Corps to the Cosmos, featuring Jaden Caradine

article 6 days 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 6 days ago

NASA Revamps Challenge Linking Community College Studies to Aerospace Careers

NASA Revamps Challenge Linking Community College Studies to Aerospace Careers

article 2 weeks 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 4 days ago

NASA Calls for Proposals to Accelerate Lunar Surface Technologies

NASA Calls for Proposals to Accelerate Lunar Surface Technologies

article 6 days ago

NASA Names Two Artemis II Astronauts to Emeritus Program

NASA Names Two Artemis II Astronauts to Emeritus Program

article 5 days 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 6 months ago

Sitemap

September 06, 1999

Home
Sitemap
1999
09
September 06, 1999

APOD: 1999 September 06 – HCG 87: A Small Group of Galaxies

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