Astronomy Astronomy

What is Astronomy?

Astronomy is the study of the Universe and everything in it, including planets, stars, galaxies, comets, and black holes. It's full of huge distances, gigantic sizes, and long periods of time. It's a BIG subject!

Astronomy Stuff:

Stargazing

Stargazing

How many constellations and planets can you find in the night sky? Record your sightings in a "stellar" journal.

A Closer Look at Mars

A Closer Look at Mars

Find out what we know about Mars in this online tour of Earth's closest neighbor.

An Interview with Mars

An Interview with Mars

Help reporter Stella Stardust interview the planet Mars

Are YOU cut out for Mars?

Are YOU cut out for Mars?

Do you have what it takes to go on a space mission to Mars?

Build the Big Dipper

Build the Big Dipper

To see what the Big Dipper would look like from outer space, build a mobile!

Cosmic Connections

Cosmic Connections

Match these awesome images from the Hubble Space Telescope with their descriptions.

Cosmic Cookies

Cosmic Cookies

Celebrate your cosmic smarts with a solar system of cookies.

Cosmic Wallpapers

Cosmic Wallpapers

Decorate your desktop with these starry images!

Don't Be Lost in Space

Don't Be Lost in Space

Your address in space is a whole lot longer than your mailing address here on Earth.

How Did the Universe Begin?

How Did the Universe Begin?

Find out how the Big Bang Theory came to be.

If Rocks Could Talk

If Rocks Could Talk

Meet six rocks that travelled to the Museum from places like Mexico, Scotland, and even outer space.

In Pictures: Beyond Earth

In Pictures: Beyond Earth

What faraway places might humans travel to someday, and how will we get there?

In Pictures: Journey to the Stars

In Pictures: Journey to the Stars

In the Milky Way Galaxy alone, there are hundreds of billions of stars. But that hasn't always been the case...

Make Your Own Astronomy Stationery

Make Your Own Astronomy Stationery

Send a note to a friend with these astronomical letterheads.

Meet the OLogist: Neil de Grasse Tyson

Meet the OLogist: Neil de Grasse Tyson

Discover where starry-eyed Neil has followed his curiosity.

Meet the Universe's Main Attraction... Gravity

Meet the Universe's Main Attraction... Gravity

Find out why a ball thrown in the air will return to the ground. 

Moon Flip Book

Moon Flip Book

See the moon in action! And discover why our view of it changes nightly.

One-on-One with the Sun

One-on-One with the Sun

Find out what makes the Sun glow, and other amazing facts, in an up-close interview with the Sun.

Planetary Mysteries

Planetary Mysteries

Take a virtual tour of our solar system to explore its many mysteries.

Solar System Scavenger Hunt

Solar System Scavenger Hunt

Size up the planets with a model scavenger hunt.

Space and Time

Space and Time

How do you describe your place in the 4th dimension?

Space Jell-O

Space Jell-O

Mix up some Jell-O, and find out how space bends around anything with mass. 

Space Travel Guide

Space Travel Guide

Let your imagination run wild, and write an inspiring work of science fiction.

The Journey Begins

The Journey Begins

Almost all of the atoms in your body were once inside stars that exploded billions of years ago. Learn more mind-boggling facts.

The Milky Way Galaxy

The Milky Way Galaxy

Tour this spinning pinwheel in space that we call home.

What Do You Know about Astronomy?

What Do You Know about Astronomy?

How much do you really know about our place in space? Take this quiz to find out!

What do you know about Stars?

What do you know about Stars?

Test your starry knowledge in this stellar quiz!

What Do You Know About The Universe?

What Do You Know About The Universe?

Test your knowledge about the things we can't see.

What's the Big Idea About Astronomy?

What's the Big Idea About Astronomy?

Astronomy is a BIG subject. We've brought learning about it down to size with these big ideas.