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Unit 1:  What Makes Our Planet So Special?
The conditions that have made life a reality on our blue, green speck and how our ideas about its place in the vast universe have evolved.

The Size of It All
Scale in the Universe

SpaceWander Roundtrip
Comparing Sizes
Powers of Ten

The Evolution of Astronomy & Physics
From Stargazers to Starships
Understanding Our Place in the Cosmos
Cultural Astronomy
Astronomy and Culture Links
Archaeoastronomy & Ethnoastronomy Links
Finding Polaris, the North Star
The Maya Astronomy Page
Mythical Ireland:  Astronomy & the Stars
Woodhenge:  The Calendar of the Cahokians
From Galileo to Hubble
The Galileo Project
Tycho Brahe
Kepler's Laws
Newton:  The Universal Law of Gravitation
Gravity Q&A
Orbits
Gravity and Escape Velocity
Astronomy Connections Gravity Lab!
Your Weight on Other Worlds
Distance to Stars by Parallax
Stellar Parallax Simulation

The Basics:  Geology, Meteorology & Topography
Adler Planetariam - Earth
Adler Planetarium - Planetary Geology
Virtual Earthquake
Earth View
NASA Earth Observatory
NASA Landsat 7
MarsQuest - Olympus Mons: Can You Find...
MarsQuest - Olympus Mons: How Big?
MarsQuest - Olympus Mons: Fly in 3D
MarsQuest - Olympus Mons: How They Form

The Earth, Sun and Moon System
A Private Universe Project - Pretest/Survey
Adler Planetarium - Earth in Motion
Seasons and Length of Day
Moon Phase Finder
The Analemma
NASA/GSFC Eclipse Site
Space Weather:  Storms from the Sun
SpaceWeather.com
GSFC Sun-Earth Connection
Sun-Earth Day 2003
Sun-Earth Day 2004
Auroras:  Paintings in the Sky
What is a Plasma?

The Evolution of Spaceflight
How to Go to Space
Alka Rockets
NASA Human Spaceflight

Unit 2:  What Is the Neighborhood Like?
The exploration and nature of our planetary system and observable stars, both small and large, near and far.

The Sun
SOHO:  Exploring the Sun
Inside the Sun
Adler Planetarium - The Sun
Sun-Earth MediaViewer
The Latest Images from the Solar Data Analysis Center
Activities to Explore the Sun

Comets, Asteroids & Meteors
Amazing Space:  Comets
Comets Q&A
Comet Web Quest
Comet Shoemaker-Levy Collision with Jupiter
Amazing Space:  Planet Impact!
Comparison of Comets and Asteroids
Near-Earth Object Close Approaches
Near Earth Asteroid Rendezvous Mission
Meteorite Central

The Planets & Moons
NASA Celestia - DOWNLOAD/INSTALL CELESTIA!
The Nine Planets
Views of the Solar System
The NJ Astronomical Assoc. Solar System Walk
Your Age on Other Worlds
Build a Solar System
Adler Planetarium - The Moon
HubbleSite - A Rendezvous with Mars
All About Mars - Retrograde Motion
MarsQuest - Earth or Mars?
Dust Storms Seen on Mars
Pluto Reconsidered

Past, Present & Future Solar System Exploration
Adler Planetarium - The Apollo Program
Cassini-Huygens Mission to Saturn & Titan
Galileo Project:  Journey to Jupiter
The History of the Exploration of Mars
NASA Mars Exploration
NASA Mars Exploration Video/Multimedia

The Life Cycles of Stars
What Are Stars Made Of? - Light and Spectra
Star Light, Star Bright
Life Cycle of Stars Activities
Stellar Evolution Simulation
Binary Star Simulation
Eclipsing Binary Simulation
The Glorious End of Stellar Life
A History of the Crab Nebula
Key Events in the History of Supernova 1987A
Nebula Comparison
Virtual Trips to Black Holes and Neutron Stars
NASA Kids:  Black Holes
The Space Place Live with Kip Thorne
Amazing Space:  No Escape: The Truth about Black Holes
Little Green Men, White Dwarfs or Pulsars?
The Sounds of Pulsars
Variable Stars Activities

Unit 3:  What Lies Beyond?
The past, present, future and science of our galaxy, cluster and unfathomable outer reaches of the universe. 

Light - The Electromagnetic Spectrum
NASA on the EM Spectrum
U. of Tenn. on the EM Spectrum
More About the Electromagnetic Spectrum
Electromagnetic Spectrum Q&A
The Land of the Magic Windows
The Infrared Photo Album
Using Light to Learn About the Universe
Living with a Star - "In a Different Light" Activities
V=frequency X wavelength
Quia Spectrum Quiz Game

The Space Place - Space Science in Action

Radio, Infrared, Optical & UV Astronomy
Optics for Kids
U. of Tenn. on Refracting Telescopes
U. of Tenn. on Reflecting Telescopes
The W.M. Keck Observatory
The World's Largest Optical Telescopes
Cool Cosmos! at Cal Tech
The CHIPS Mission:  The ISM - What on Earth Is It?
MountainQuest! - Choosing a Site for an Observatory
Astronomy Picture of the Day

The Hubble Space Telescope
HubbleSite
Hubble Space Telescope Q&A
HST Servicing Mission - Mission Mastermind Activity
The Best of HST

High Energy Astronomy
Ask a High Energy Astronomer
Chandra X-ray Observatory
Constellation-X:  Why Should We Study X-rays?
X-ray Astronomy Journey of Adventure
Observing Bursts from an X-ray Burster
Gamma-ray Bursts - A Major League Puzzle
Gamma-ray Large Area Space Telescope Presentations
Spectra from Space

Galaxies, Clusters, Superclusters & the Universe
Galaxies Galore
U. of Tenn. on Galaxies and Their Classification
Tutorial on Galaxies
Galaxies Q&A
Galactic Inquiry - Galaxy Classification Activity
U. of Tenn. on the Milky Way Galaxy
Galaxy Hunter
Key Events in the History of Centaurus A
The Messier Object Index
U. of Tenn. on Clusters and Superclusters
An Atlas of the Universe

Cosmology
Harvard-Smithsonian Universe!
U. of Tenn. on Cosmology
Cosmology 101 at WMAP
Cambridge Cosmology
Astro. 123 at U. of Oregon on Cosmology & Life
Cosmic Microwave Background:  The New Cosmology
Mapping the Cosmic Microwave Background
The Expanding Universe
The Expanding Universe Activity
A View from a Distant Universe
Dark Matter, Cosmology & the Structure of the Universe
The Particle Adventure
Dark Matter and Related FAQs

Unit 4:  Is There Life Out There or Will We Be the First to Live Elsewhere?
The science and debate behind the ultimate question -- is there anyone out there or will we be the Martians?

Extrasolar Planets
A Case of the Wobbles:  Finding Extrasolar Planets
Exoplanets.org
Kepler Mission:  A Search for Terrestrial Planets
Searching for Protoplanetary Disks Activities

Extraterrestrial Life
The Drake Equation:  Estimating the Number Activity
The SETI Institute Online
"Who's Out There?" - A SETI Game
The SETI League
The "Wow!" Signal
The Songs of Dr. Paul Shuch - The SETI League Entertainer
How Rare is Earth-like Life?

Living in Space / Colonizing & Terraforming Mars
NASA Spaceflight - The International Space Station
City in Space - The International Space Station
International Space Station Challenge
Living in Space - Design a Space Station
Searching for Just the Right Planet
The Artemis Project:  Private Enterprise on the Moon
Red Guide to Mars
Water on Mars? - Introduction
Water on Mars? - The Evidence
Water on Mars? - The Theories
Mission to Mars - Equilibrium Study
Adler Planetarium - Mars Exploration Station


News & Cumulative Links in Astrophysics,
Cosmology & Astrobiology
Let me know about sites other than these
that you find with current articles on these ever-changing topics!

Phil Plait's Bad Astronomy
Science @ NASA

MORE COMING SOON