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Xploration Outer Space: What Makes a Planet?

22 minutes 19 seconds

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Still image from: Xploration Outer Space: What Makes a Planet?

This episode explains why Pluto is no longer considered a planet and why some scientists believe there is another planet in the solar system that hasn't been discovered yet. Host Emily Calandrelli looks at many objects that, regardless of definition, look like new and fascinating planets. Part of the "Xploration Outer Space" series.

Media Details

Runtime: 22 minutes 19 seconds

Topic: Science
Subtopic: Astronomy, Space Sciences
Grade/Interest Level: 7 - 12
Release Year: 2016
Producer/Distributor: Steve Rotfeld Productions
Series: Xploration Outer Space
Voicer: Roy Samuelson
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Astronomy photo. Close-up of a three-quarters moon is illuminated against the night sky, displaying details of dark spots and craters.

Aerial view of the Laser Interferometer Gravitational-Wave Observatory in Louisiana.

Animated rendering of our solar system displays the sun at the center with all nine planets and their orbits illustrated by gold rings.

In an artist’s studio, we see several easels holding paintings featuring astronauts in various space scenes.

Woman and her guide dog move toward us crossing the street at a crosswalk.

Space shuttle blasts off from its launch pad with a bright blast as plumes of smoke billow in its wake.

Space shuttle prepares for flight on its launch pad against a partly cloudy sky.

Solar flares leap off the sun's surface, blazing against the black of space.

Digital rendering of a Mars rover cruising over a red, rocky landscape with dusty mountains in the background.

Close-up shot of the NASA Insight Mars Lander space shuttle under on it’s launch pad.