The universe is full of a mystic matter people cannot see. Pupils respond to 10 questions about the stuff in the universe. Most of the questions involve the big bang theory and dark matter. Learners find out how astronomers have found...

A read-aloud anthology explores our solar system and beyond. Informational texts about astronomy invite pupils to discuss readings. Extension activities examine vocabulary, sayings, and phrases. Scholars work through the writing process...

Develop an understanding of the universe. Learners answer 10 multiple choice questions about several topics in astronomy. Questions contain information about the age of the universe, gravitational attraction, galaxies, planets and comets...

Ever wonder why Pluto isn't considered a planet? Or how large the Earth is compared to the other inner planets? Explore the universe with a series of projects that simulate different aspects of our solar system. The activities require...

A website all about planetary mysteries—it's a one-stop-shop for all things, stars, planets, and space travel. Scholars read an astronomy overview to discover the page's big ideas, then choose from the plethora of resources, including...

It takes 225 million years for our sun to travel around the galaxy. The presentation covers astronomical units, light years, telescopes, types of stars, the life cycle of a star, and types of galaxies. This is the last lesson in a...

A quiz testing your knowledge of the Big Bang.

How did the universe begin and how is it expanding? CERN physicist Tom Whyntie shows how cosmologists and particle physicists explore these questions by replicating the heat, energy, and activity of the first few seconds of our universe,...

Sajan Saini explains the existing theories around the Big Bang and what, if anything, lies beyond our universe.

Can you help a cow plot a path out of the Milky Way? This hilarious space game is for all ages and is offered by HubbleSite. Users may pick their level of expertise and can choose from novice, pretty smart about space, or an astrobrainiac.

Do we know how our universe is going to end? Venus Keus explores cosmologists' three possible scenarios.