Have you ever looked into the night sky and wondered where all those millions and million of stars come from? Find out here with a mini astronomy lesson!

How much do you know about our solar system's planets? Kids learn facts about Neptune in an out-of-this-world worksheet.

Third grader today, astrophysicist tomorrow! Let your child research their planet of choice, and discover everything from the number of moons to temperature.

Looking for a fourth grade worksheet to help your kid with science? This printable will test his knowledge of the water cycle.

Does your child know where Earth is in the Solar System? He'll learn as he completes this fun, planet printable.

How do the Sun and the Moon interact with the Earth, and how do all three depend on one another? Find out in this science worksheet.

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Discover some fun facts about the sun — and bring it to life with color — with this astronomy worksheet!

What's the difference between renewable and non-renewable energy? Help your student discover the various forms of energy we use each day.

Teach your kids all about the second planet from the Sun with this simple science sheet.

Without rain, we wouldn't have any puddles to splash and stomp in. Does your third grader know why and how rain falls from the clouds?

Teach your child how to respect the ecosystem with a science worksheet that doubles as a coloring page. Can they identify the sources of pollution in the scene?

How well does your child know the layout of our Solar System? This worksheet focuses on the biggest planet, Jupiter.

Milky Way: candy bar or galaxy of 100 to 400 billion stars?

From glaciers to mountains to wetlands, our planet has lots of different landforms. Help your child learn all about them with this fun earth science crossword.

Does your learner ever wonder what makes the Earth dark at night and bright during the day?

How far away is the Red Planet from the sun? Find out with this great Solar System printable.

Here's a great way to teach your kids more about our solar system. This worksheet focuses on the dwarf planet, Pluto.

Did you know that ocean water is salty, but river water is not? Find out how fresh and salt water mix together in this water cycle worksheet.

One of the most famous and easy to spot constellations is the Big Dipper! Formally known as Ursa Major, this constellation was named after a bear.

What is water energy? Also known as hydro power, water energy is one of our important renewable resources!

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

This Earth Day quiz family and friends with this true or false questionnaire. It's all in good, informative, fun!

Here's an introduction to different types of rocks.

What is biomass energy? Learn about an important form of renewable energy with this colorful worksheet.

This worksheet features a scientific explanation and awesome photos of solar eclipses, which are extremely rare scientific phenomena.

Use this cool 2-page worksheet to make your own big dipper clock!

Does your child have a knack for astronomy? Teach him about the constellations with this great worksheet.

Many legends told by ancient people have characters that you can find as star formations called constellations! This one is Andromeda.

Space enthusiasts will love learning about Freedom 7, the first manned American space mission.