This is the story of our solar system. Learn about the life of Nicolaus Copurnicas and his great discovery. Learn more by answering the question at the bottom.

Ready for liftoff? Take to the starry skies with this worksheet that explores the three basic types of galaxies.

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

This worksheet features Mercury, the smallest planet in our Solar System, and also the planet that's closest to the Sun.

Children get to know a few geology terms in this landform word search puzzle.

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.

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

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

Renewable energy is extremely important for the Earth's future! Test your child's knowledge of renewable resources with this review sheet.

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.

This helpful worksheet lays out all the qualifications for planethood. A great way to start studying outer space science!

Educate your budding scientist about fossil fuels with this worksheet about non-renewable energy.

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.

Did you know that Uranus can get as cold as -144° Fahrenheit? Learn more about the third largest planet in our solar system on this planet printable.

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.

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

This worksheet teaches all about the planet Saturn and its placement in the Solar System.

What does the Earth look like? Find out all about the nooks and crannies that cover the planet with this landforms worksheet.

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

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

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!

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

Cave formations come in all kinds of shapes and sizes; get the scoop on common cave formations with this two page printout with a maze and vocabulary.

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

On this worksheet, kids learn all about the look and location of Uranus, and they get to cut out a picture to use in their own Solar System diagram.

What is a plateau? What's the difference between a butte and a mesa? Look at these three land forms and learn to tell them apart with this worksheet.

Learn about how the Earth was formed in this science worksheet that covers the early years of the Earth.

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