Name: Five Facts About Earth, Our Home Planet
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Nova

Earth is the only known planet to harbor life.

Five Facts About Our Home Planet

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Earth is the only planet in our Solar System to harbor life. But what else makes Earth unique?

Getting to know the planet we inhabit.

Five Facts About Earth, Our Home Planet

Space & Flight

Five Facts About Our Home PlanetPublished: July 29, 2019Onscreen: Five facts about Earth.1. Earth is the biggest of the terrestrial planets.Diameter: 7918 milesDistance from the Sun: ~93 million miles2. Earth’s atmosphere protects us from incoming meteoroids—most of which break up before they reach the surface.3. Most of Earth’s volcanoes are hidden underwater. From base to summit, Hawai`i’s Mauna Kea volcano is taller than Mount Everest—most of Mauna Kea is underwater.4. As far as we know, Earth is the only place in our solar system with life.5. Earth is the only planet that has a single moon, which is fairly far away. Thirty Earth-sized planets could fit between the two celestial bodies.To learn more about Mercury, tune in or stream "The Planets: Inner Worlds"

United States

Northern Mariana Islands

Puerto Rico

American Samoa

Guam

U.S. Virgin Islands

U.S. Minor Outlying Islands

US & Territories

NOVA investigates the story of cannabis from the criminalization that has disproportionately harmed communities of color to the latest medical understanding of the plant. What risks does cannabis pose to the developing brain? How much do we know about its potential medical benefits? As cannabis becomes socially accepted, scientists are exploring its long-term health consequences. (Premiered September 29, 2021)Check out a previously recorded panel discussion and audience Q&amp;A featuring experts and producers from "The Cannabis Question" <a href="https://youtu.be/nSTT5RZ_hxA">here</a>.

As state-legalized cannabis spreads, NOVA explores its little-known risks and benefits.

The Cannabis Question

A 2006 composite image from NASA's Hubble Space Telescope and Spitzer Telescope shows the chaos of baby stars in the Orion nebula some 1,500 light-years away. Image Credit: NASA/JPL-Caltech/STScI

With the upcoming launch of the James Webb Space Telescope, the Hubble era is gradually drawing to a close. Here are some highlights from the countless wonders Hubble has shown us during its 31 years in space.

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A statue of Zheng He at the Sam Poo Kong Temple in Java, Indonesia. Image Credit: Budianto Santosa, Shutterstock

In the 1400s, Zheng He sailed thousands of miles around Asia and Africa in ships the size of soccer fields, spreading Chinese innovations like compasses and gunpowder in the process.

Five Facts About Our Home Planet

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Support Provided By

Explore More

The Planets: Inner Worlds

Five Facts About Mercury, the Planet Closest to Our Sun

Five Facts About Hot, Volcanic Venus