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galaxies

Galaxies
Image: NASA

Galaxies

It's been less than 100 years since astronomers found out there were galaxies outside our own community of stars, the Milky Way Galaxy.

Today we know that there are billions of galaxies in the universe, each held together by gravity. Get all the details and take a star-studded tour of their spiral, elliptical, and irregular shapes.

Windows to the Universe
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Scale of the Universe

Scale of the Universe

Having a hard time imagining the enormity of space? Zoom out to the edges of the observable universe, or zoom in to see quantum foam. More...

Interactive
Cary and Michael Huang
Classify Galaxies

Classify Galaxies

Help astronomers by classifying galaxies according to their shapes. You might be the first person ever to examine the galaxy you're looking at. More...

Activity
Galaxy Zoo
How the Universe Works: Family of Galaxies

How the Universe Works: Family of Galaxies

In 1924, Edwin Hubble made one of the biggest discoveries ever. See how the "fuzzy blobs of light" he spied delivered an astronomical-sized shock. More...

Video
Discovery
Space School: Milky Way

Space School: Milky Way

Take a tour of our celestial home, which is 100,000 light years across and 1,000 light years deep. What makes the Milky Way Galaxy so special? More...

Video
Discovery
Astronomers Discover Most Distant Galaxy Yet

Astronomers Discover Most Distant Galaxy Yet

A galaxy formed 700 million years after the Big Bang — when the universe was just 5% of its current age — was recently discovered. Check out galaxy z8_GND_5296, which is producing stars more rapidly than our Milky Way. More...

Article
CBS
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Galaxies: Photo Gallery

Galaxies: Photo Gallery

Browse this awesome gallery of galaxies — Andromeda, Cartwheel, Elliptical, and more. Than pick your favorite to wallpaper your computer. More...

Images
National Geographic
The Milky Way Galaxy

The Milky Way Galaxy

Even if you could travel at the speed of light, it would take you about 25,000 years just to get to the middle of our galaxy. Find out more about this huge collection of stars, dust, and gas. More...

Article
AMNH
Latest News About Stars and Galaxies

Latest News About Stars and Galaxies

The discoveries and awesome photographs just keep coming. Check out the latest findings from the Hubble Space Telescope, NASA's Chandra X-Ray Observatory, and more. More...

Article
Space.com
Scientist Profile: Galactic Astronomer

Scientist Profile: Galactic Astronomer

Meet Marianne Takamiya, who works atop Hawaii's Mauna Kea using the powerful Gemini telescope to look at other galaxies. More...

Profile
DragonflyTV/PBS

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