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

From left, Artemis II crew NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen are photographed on April 29, 2026, in the White House Oval Office with President Donald J. Trump.

NASA’s Artemis II Crew Set to Receive Congressional Space Medal of Honor

article6 days ago

Two NASA team members look up at the large, metallic space telescope in a clean room.

NASA Sets Coverage for Roman Space Telescope Launch from Florida

article3 days ago

What’s Up: August 2026 Skywatching Tips from NASA

What’s Up: August 2026 Skywatching Tips from NASA

article4 weeks 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 Sets Coverage for Roman Space Telescope Launch from Florida

NASA Sets Coverage for Roman Space Telescope Launch from Florida

article 3 days ago

NASA’s Pandora Mission Begins Study of Exoplanets, Host Stars

NASA’s Pandora Mission Begins Study of Exoplanets, Host Stars

article 2 days ago

Galactic Gems Glisten in New Gallery From NASA’s Chandra

Galactic Gems Glisten in New Gallery From NASA’s Chandra

article 2 days ago

Highlights

Human-Related Microbes May Survive Moon’s South Pole, NASA Finds

Human-Related Microbes May Survive Moon’s South Pole, NASA Finds

article 1 week ago

NASA’s LRO Images Falcon 9 Crater on Moon, Learns New Details

NASA’s LRO Images Falcon 9 Crater on Moon, Learns New Details

article 1 week ago

NASA Will Attempt to Observe Rocket Part’s Lunar Impact

NASA Will Attempt to Observe Rocket Part’s Lunar Impact

article 3 weeks ago

Highlights

Rare, Widespread Snow in the Atacama Desert

Rare, Widespread Snow in the Atacama Desert

article 12 hours ago

Building Foresight for Earth Science, featuring Lindsey Jacobson

Building Foresight for Earth Science, featuring Lindsey Jacobson

article 20 hours ago

A Changing World for Emperor Penguins

A Changing World for Emperor Penguins

article 1 day ago

Highlights

Curiosity Reaches 1-Kilometer Elevation Gain

Curiosity Reaches 1-Kilometer Elevation Gain

article 22 hours ago

NASA Johnson Pilots Chase Moon’s Shadow for Eclipse Science

NASA Johnson Pilots Chase Moon’s Shadow for Eclipse Science

article 22 hours ago

Starstruck: NASA Research Shows How Sun’s Ancient History Shaped Earth

Starstruck: NASA Research Shows How Sun’s Ancient History Shaped Earth

article 3 days ago

Featured

NASA’s Pandora Mission Begins Study of Exoplanets, Host Stars

NASA’s Pandora Mission Begins Study of Exoplanets, Host Stars

article 2 days ago

Galactic Gems Glisten in New Gallery From NASA’s Chandra

Galactic Gems Glisten in New Gallery From NASA’s Chandra

article 2 days ago

Hubble Solves Merger Mystery From Milky Way’s Early Years

Hubble Solves Merger Mystery From Milky Way’s Early Years

article 1 week ago

Highlights

Planetary Exploration Science Technology Office (PESTO)

Planetary Exploration Science Technology Office (PESTO)

article 22 hours ago

A Changing World for Emperor Penguins

A Changing World for Emperor Penguins

article 1 day ago

NASA’s Pandora Mission Begins Study of Exoplanets, Host Stars

NASA’s Pandora Mission Begins Study of Exoplanets, Host Stars

article 2 days ago

Highlights

NASA Selects University Teams to Help Advance Aviation Research

NASA Selects University Teams to Help Advance Aviation Research

article 1 week ago

NASA Student Aviation Challenge Focuses on Nation’s Infrastructure

NASA Student Aviation Challenge Focuses on Nation’s Infrastructure

article 1 week ago

NASA Glenn’s Legacy Forged Through Decades of Flight Research

NASA Glenn’s Legacy Forged Through Decades of Flight Research

article 1 week ago

Highlights

New Next-Gen Dish Adds Muscle to NASA’s Deep Space Network

New Next-Gen Dish Adds Muscle to NASA’s Deep Space Network

article 2 days ago

Amendment 69: New Opportunity: D.9 Habitable Worlds Observatory Instrument Concept Assessments

Amendment 69: New Opportunity: D.9 Habitable Worlds Observatory Instrument Concept Assessments

article 2 days ago

Copernicus Trajectory Design and Optimization System

Copernicus Trajectory Design and Optimization System

article 6 days ago

Featured

Building Foresight for Earth Science, featuring Lindsey Jacobson

Building Foresight for Earth Science, featuring Lindsey Jacobson

article 20 hours ago

NASA State Hubs for Skilled Technical Workforce

NASA State Hubs for Skilled Technical Workforce

article 1 week ago

Career Spotlight: Mechanic (Ages 14-18)

Career Spotlight: Mechanic (Ages 14-18)

article 1 week ago

Featured

NASA Establishes State Hubs to Grow Technical Aerospace Workforce

NASA Establishes State Hubs to Grow Technical Aerospace Workforce

article 1 week ago

NASA’s Artemis II Crew Set to Receive Congressional Space Medal of Honor

NASA’s Artemis II Crew Set to Receive Congressional Space Medal of Honor

article 6 days ago

The View from Above: The Gemini Visual Acuity Experiments

The View from Above: The Gemini Visual Acuity Experiments

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 5 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

October 17, 2007

Home
Sitemap
2007
10
October 17, 2007

Water Levels in Lake Powell
APOD: 2007 October 17 – I Zwicky 18: The Case of the Aging Galaxy

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