outer space

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References

Videos

Examine the observable universe's place within the whole universe

The scale of the universe: Earth's solar system and beyond

Learn about space expansion and why gravity and electromagnetism are not affected when space expands

Discover

NBA Lakers Celtics Finals Kevin Garnett shooting.

10 Great Sports Rivalries

Cleopatra hieroglyphic carving the Ancient Egyptian queen Cleopatra. Wall of the Temple of Horus at Edfu, Egypt.

What Did Cleopatra Look Like?

Jackson (Wyoming, United States). Jackson Lake (also called Jackson Hole), southern end of the Teton Range (the Grand Tetons), Grand Teton National Park, Wyoming, USA

7 Wonders of America

American bison (Bison bison) also known as buffalo or plains buffalo on the prairie, western U.S.

What’s the Difference Between Bison and Buffalo?

Panoramic view at sunrise of moai, Ahu Tongariki, Easter Island (Rapa Nui), Chile

6 Lost Civilizations

Happy, smiling, flying pig

7 Everyday English Idioms and Where They Come From

Small, white rat (genus Rattus) on a glass table. (rodent, laboratory, experiment)

Cruel and Unusual Punishments: 15 Types of Torture

outer space

astronomy

Also known as: space

Learn about this topic in these articles:

Kármán line

In Kármán line
atmosphere and outer space. The line is neither sharp nor well defined but is often taken to encircle Earth at an altitude between 80 to 100 km (50 to 62 miles) above mean sea level.
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