NASA
Nasa: Hubble Finds 16 Exoplanet Candidates
In the past, extrasolar planets have either been too far away to detect or conditions did not allow them to be seen. Hubble has made this possible and has determined that planets are as abundant in other areas of the milky way as they...
Exploratorium
Exploratorium: Your Age on Other Worlds
Enter your birthday and find out how old you are on the other planets in the Milky Way Galaxy. Understand why our age is different on each planet.
Khan Academy
Khan Academy: Answers to Exploration Questions: Galaxies
Answers to the exploration questions about galaxies can be found on this site.
NASA
Nasa Science: For Kids: Solar System Fun
Test your knowledge about the solar system with games and activities designed to help explore what you know about the sun, the planets and their moons, space rocks, the Milky Way, and related topics.
Kidport
Kidport: Space Science
This complete resource will help students to improve their understand of space exploration. Includes images of the universe, galaxies, stars and planets.
American Museum of Natural History
American Museum of Natural History: O Logy: Stuff to Do: Stargazing
Get started on the road to becoming an expert stargazer by following these recommendations for identifying stars, planets, and constellations. Includes an example of a journal that can be used as a record of your investigations.
PBS
Pbs Nova Online: Spin a Spiral Galaxy
PBS site provides various views of spiral galaxies. (Quick Time required) With this technology, you can manipulate the image to spin it around and look at it from various angles.
Space Telescope Science Institute
Amazing Space: Galaxies
What is a galaxy? What is the name of our galaxy? Site offers answers to these questions as well as many more.
NASA
Nasa Space Place: What Is a Galaxy?
This resource explores the different types of galaxies through text and images.
Cosmos 4 kids
Cosmos4 Kids: Galaxies
Learn the basic facts about galaxies. Brief, to the point text make this site most appropriate for younger students.
Rice University
Galileo Project: Christopher Clavius
This site from The Galileo Project of the Rice University provides a biography of Clavius including an excerpt from his writings. A picture is provided in this article along with links to additional information.
NASA
Nasa: Space Place: What Is a Satellite Galaxy?
Find out about the behavior and characteristics of the many satellite galaxies that orbit other galaxies.
Space Telescope Science Institute
Nasa: Hubble Space Telescope: Galaxies
At this site from HubbleSite you can learn all about galaxies and black holes. Click on the movie link and discover how old the universe is or study about what happens when two galaxies collide!
Ministerio de Educación (Spain)
Ministerio De Educacion: Nuestra Galaxia, Llamada via Lactea Mod Vii Unit 1
Learn about our galaxy, their mass and the evolution of the various theories about their conception.
PBS
Pbs: Nova Online: Galaxies, Clusters, and Superclusters
PBS site explores these building blocks of the universe as well as their various types and clusters.
Other
University of Cambridge: Astro Adventure
Imagine a time when you can travel through space, planet to planet, cheaply and in comfort, when you can take a trip to the stars as your next holiday. Well, imagine no more. Learn more about the solar system as you take this trip of a...
NASA
Nasa Star Child: Star Child
StarChild from NASA defines and describes the Solar System in a simple and easy-to-understand manner. The website is broken down into two versions for the student, grade school and junior high.
Wikimedia
Wikipedia: Democritus
This encyclopedia entry surveys the life and thought of the 5th century BCE Greek philosopher Democritus, who proposed the existence of the atom.
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: La Situacion De La Tierra en El Universo
Throughout this unit you will make an imaginary journey that will transport you from the remotest infinity of the universe around us, to the surface of our planet. During this trip you will see the main features and components of our...
Other
Sky Server: About Astronomy
This site from SkyServer provides the history of astronomy as well as links to mapping the sky, galaxies, cosmic structures and much more. Several pictures are given, and the article is medium in length.
NASA
Nasa: The Space Place
This site from NASA's Space Place is geared towards early elementary learners. It offers detailed instructions for crafts and activities related to space, games and a teacher resource area. Students can also ask an expert at this site.
Curated OER
Astro Lab: Space, a Contemporary Vision of the Universe
Explore how our contemporary understanding of the universe came to be. This overview looks at the history of three main areas of study, namely space, time, and the arrangement of matter.
Florida State University
Florida State University: Powers of Ten
This webpage from the Florida State University offers an applet with succeeding images, each "10 times bigger or smaller than the one preceding or following it," as a demonstration of exponential notation.
Curated OER
Smithsonian Institution Archives: Muriel E. Mussells Seyfert (B. 1909)
Muriel E. Mussells Seyfert (b. 1909) was an astronomer at Harvard College Observatory and had just discovered three new ring nebulae in the Milky Way when this photograph was taken, March 1936