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Q&A with Astronomer Julianne Dalcanton

Photos: Milky Way Galaxy Milky Way as seen from Earth: courtesy of Photo Researchers; Q&A with Astronomer Julianne Dalcanton:Julianne Dalcanton: courtesy of Julianne Dalcanton; Spiral galaxy: courtesy of AURA/NOAO/NSF; Elliptical galaxy: courtesy of STScI; Irregular Galaxy: courtesy of Bill Shoening/AURA/NOAO/NSF; Sombrero Galaxy: courtesy of Bill Keel; Illustrations: How Much is a Billion: Jim Steck Q&A with Astronomer Julianne Dalcanton Amanda Duffy

Find out what's fun about being astronomer and what's unique about our Milky Way Galaxy.

Solar System Scavenger Hunt

Illustrations: Eric Hamilton

Size up the planets with a model scavenger hunt.

Space Travel Guide

Illustrations: Eric Hamilton

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

Stargazing

Photos: Neil at 12 with Dad: courtesy of Neil de Grasse Tyson; Neil today: courtesy of Denis Finnin, AMNH; Illustrations: Jim Paillot

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

The Big Bang

Photos: The Big Bang: Gas: courtesy of Neil de Grasse Tyson; Neil today: courtesy of Denis Finnin, AMNH; Illustrations: Create your own Timeline: Daryl Collins

What we know, and don't know, about what started it all.

The Journey Begins

Photos" Neil at 12 with Dad: courtesy of Neil de Grasse Tyson; Neil today: courtesy of Denis Finnin, AMNH; Illustrations: Jim Paillot

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

The Milky Way Galaxy

Photos: Milky Way Galaxy Milky Way as seen from Earth: courtesy of Photo Researchers; Q&A with Astronomer Julianne Dalcanton:Julianne Dalcanton: courtesy of Julianne Dalcanton; Spiral galaxy: courtesy of AURA/NOAO/NSF; Elliptical galaxy: courtesy of STScI; Irregular Galaxy: courtesy of Bill Shoening/AURA/NOAO/NSF; Sombrero Galaxy: courtesy of Bill Keel; Illustrations: How Much is a Billion: Jim Steck Q&A with Astronomer Julianne Dalcanton Amanda Duffy

Tour this spinning pinwheel in space that we call home.

The Search for Martian Life

Photos: A Closer Look at Mars: Planets and Sun: Daryl Collins; Robot: Jim Paillot; How Do We Know So Much about Mars: Telescopes: courtesy of David Crisp and the WFPC2 Science Team (JPL/CalTech); NSSDC, and NASA Spacecraft: NASA, Viking Project Robots: IMP Team, JPL (Sojourner (tm); Mars Rover (tm) and spacecraft design and images copyright: 1996-97, California Institute of Technology. All rights reserved. Further reproduction prohibited.) and NASA; Illustrations: Jim Paillot; The Search for Martian Life: Maria Zuber: courtesy of Maria Zuber; Star Background: courtesy of AURA One-on-One with the Sun: Venus, Earth, Mars: courtesy of NASA Sunspot: courtesy of AURA/NOAO/NSF; Crab Nebula: courtesy of Bill Shoening, AURA/NOAO/NSF; Boy: courtesy of Denis Finnin, AMNH

Is there life on Mars? Find out what a NASA scientist thinks.

What Do You Know about Astronomy?

Photos: Q3a: courtesy of MOC Team and NASA, Mars Global Surveyor; Q2, 3b, 3c, 5, 7: courtesy of NASA; Q4: courtesy of Robert Williams and the Hubble Deep Field Team (STScI) and NASA; Q6: courtesy of Photo Researchers; Q8: courtesy of NASA/JPL/CALTECH; Q10: courtesy of ESA/STScI, Dr. Christopher Burrows and NASA, Hubble Space Telescope

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

What Does Gravity Do?

Illustrations: Jim Paillot

A quick explanation of why we care about gravity.

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