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One way astronomers search for planets is by looking for the shadows they cast in front of stars.

The Sun is our closest star. Stars produce heat, light, and do not orbit other celestial objects.

How can the moon or sun seem to disappear right before our eyes? When the moon, the Earth, and the sun align just right in their orbits, they can cause a solar or lunar eclipse! Find out how light and shadow work together to trigger these cool events.

Beliefs about the shape of the earth have varied over the millennia, but the Ancient Greeks were able to observe that our planet is round and even Eratosthenes attempted to measure its size. It was not until explorers had fully charted the globe that most people were really able to comprehend its spherical shape.

Anna must wake up late and struggle to keep warm outside so she can watch a meteor shower.

Who knows what is at the end of a black hole? Astrophysicists!

Galileo used his telescope to discover new and marvelous mysteries in the night sky!

Are there more than 13 planets in our solar system? Learn how astronomers categorize the objects out in space.

If scientists found a way to live on a different planet, would they tell people they could live there and make it a new Earth?

Astronomers have discovered a distant planet that can possibly sustain life. The planet is known as Earth and is inhabited by humans! Children will enjoy seeing how aliens might imagine the shapes and colors of Earth's creatures.

Embark on an unforgettable journey through space with "Exploring Our Solar System: A Children's Guided Adventure"! This engaging and educational book invites young listeners to explore the wonders of our solar system, from the scorching surface of Mercury to the icy plains of Pluto. Filled with fascinating facts, this book makes learning about the planets, moons, asteroids, and comets a fun and exciting experience. Join a group of happy and curious children as they don their spacesuits and point excitedly at the cosmic wonders around them.

The Hubble Space Telescope was launched in 1990 aboard a Space Shuttle. Since then, it has made over 1.5 million observations.

Embark on an out-of-this-world adventure with "Orbiting the Sun, Planets of the Solar System," a captivating and educational children's book that takes young listeners on an exciting journey through space! Packed with colorful illustrations and fascinating facts, this book is the perfect guide for budding astronomers and curious minds.

¡Siete insólitos destinos para quienes deseen pasar unas vacaciones de otro planeta! Una descripción detallada, original y divertida de cada uno de los planetas del Sistema Solar, que incluye información sobre las misiones espaciales que los visitaron y datos sobre los sitios web oficiales...

Have you ever heard of the Showdown at Separation Point? In 1878, astronomers, James Watson and Urbain J.J. Le Verrier, disagreed about the existence of a planet, being named Vulcan, between the sun and Mercury. During an eclipse over Wyoming with telescopes and sky maps, they were finally able to discover which astronomer was right. Who do you think won this science showdown?

Do you know that astronauts are not the only living beings who can travel through space? Our human microbes do as well! When human astronauts go into space and return, they bring the microbes inside their bodies with them! Learn what these organisms teach scientists and how they can affect the human body both in space and on Earth.

Have you ever wondered what living in space would be like? Meet the Kellys who are identical twins and both astronauts for NASA. With one brother in space and the other on Earth, they are an experiment to learn how human bodies that share the same DNA are affected by living in space for a long time. What do you think NASA can learn from this twin science study?

Take a ride on a rover with NASA as they explore the planet Mars. Learn how NASA explores Mars for evidence of life especially the existence of water. Scientists believe that life depends on water. Is it possible that Mars had life and why is it so different from Earth? Discover the tools, equipment and methods scientists use to uncover rock, water, and fossils to test as evidence of life.

What should you expect if you want to become one of the first inhabitants of a Martian colony? Humans have never lived on Mars so they will have many challenges to overcome in order to successfully stay there. Learn what the future lives of new Martians will be like and understand the obstacles they will need to overcome in order to build a new Martian society.

Do you know what kinds of food astronauts eat and drink while on a space mission? Learn how NASA prepares, dries and packages different food so it lasts for the journey! Find out the different ways that astronauts cook and eat in space which has zero gravity so it doesn't float away. Discover how astronauts use a very different kind of bathroom toilet and what happens to human waste in space.