All Planet Sizes

This illustration from the Lunar and Planetary Laboratory shows the approximate sizes of the planets relative to each other. Note that the planets are not shown at appropriate distances from the Sun.

Are We Alone?

This video segment adapted from NOVA features a variety of scientific perspectives on the age old question, "Are we alone in the universe?" Animations make vivid the improbability that we could intercept a radio wave signaling extra terrestrial intelligence.

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Basic Ingredients for Life

In this lesson, students make impact craters to gain insight into how comets and asteroids deliver water and chemicals to the Earth and other places in the solar system.

Changing Views of Pluto

See images from the Hubble Space Telescope that show evidence of seasons on Pluto, in this video adapted from NASA.

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Characteristics of the Sun

This video segment adapted from NASA describes the basic characteristics of our star, the Sun.

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Comets Bombard the Early Earth

Visualize how comets carrying chemicals necessary for life could have made their way to Earth billions of years ago in this video segment adapted from NOVA.

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Comets Deliver Amino Acids to Earth

Amino acids, essential ingredients for life, may have been delivered to Earth by comets billions of years ago, as visualized in this video segment adapted from NOVA.

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Dark Energy

In this video adapted from QUEST, learn about the discovery of a form of energy, called dark energy, which has the potential to alter our theories of how the universe is structured.

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Detecting Life on Other Planets

In this video from NOVA scienceNOW, learn how scientists detect potential signs of life on distant planets.

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Down to the Core Challenge

In this video from Design Squad Nation, kids design and build devices that can extract a core sample from a potato “asteroid.” They also learn how samples give NASA scientists insight into solar system objects.

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Dust-Proofing a Mars Rover

Enter the lab of NASA scientist Dr. Carlos Calle to see how systems are being developed to keep planetary rover solar panels dust-free, in this video from NASA EDGE.

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Earth as a System

This visualization adapted from NASA maps progressive global changes onto a rotating globe. Earth's atmosphere, hydrosphere, geosphere, and biosphere are shown to be dynamic and interconnected.

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Eclipse of the Century

This video segment adapted from NOVA features spectacular footage from the 1991 solar eclipse that fortuitously occurred directly over several major astronomical observatories in Hawaiʻi.

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The Elements: Forged in Stars

The story of how elements from lithium to uranium are created by stars is illustrated through animation and a hands-on periodic table in this video segment adapted from NOVA.

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Europa Jupiter System Mission

This video from NASA introduces a proposed mission to study potential habitable worlds around gas giants such as Jupiter.

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The Evolution of the Kuiper Belt

This video from NASA explores how the structure of the Kuiper belt can provide insight into the formation of the solar system and indicate the presence of planets.

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Evolution of the Moon

This video from NASA looks at how Earth's moon has changed since its formation about 4.5 billion years ago.

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Exploration of Comets

In this interactive activity from NASA, explore the anatomy and life cycle of a typical comet and learn about several comet missions.

Explore the Moon

See what it is like to walk on the Moon by viewing this collection of QuickTime images from NOVA Online. Stunning 360-degree panoramas from each of the six successful Apollo Moon landings are featured.

Extreme Temperatures on the Moon

In this video segment adapted from Interactive NOVA, astronaut John Young experiences extreme temperatures on the Moon that are a result of the Moon's low gravity and lack of atmosphere.

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