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What is the universe made of?

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What is the universe made of? Is it made of atoms like everything found on Earth? Find out what the universe is made of in this article.

Could Our Spacecraft Accidentally Ignite an Alien World's Entire Atmosphere?

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Outer planets in our solar system have atmospheres made up of flammable chemicals that can cause explosions on Earth. Could a rocketship, or electric spark, ignite them?

How to Find Orion's Belt in the Night Sky

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Winter is the perfect time to look for Orion's Belt in the Northern Hemisphere. If you're new to stargazing, we'll show you how to find it.

What If the Earth Had Two Moons?

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Tons of planets have more than one moon. Heck, Jupiter and Saturn have more than 50 each, and they seem to be doing just fine. So why is it that the idea of a second moon for Earth has scientists throwing up red flags?

Why do civilizations collapse?

science.howstuffworks.com/environmental/green-science/civilizations-collapse.htm

The mighty Romans certainly never thought it would happen to them, but the sun eventually sets on even the most powerful empires. Is there more to the story than war?

Why Don't We All Use the Same Time Zone?

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The world has only had time zones since the late 1800s. Some people think we should eliminate them and have just one universal time instead.

Researchers Find First (Potential) Planet Outside the Milky Way

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Using the Chandra X-ray Observatory, a team of scientists discovered what could very well be the first exoplanet outside the Milky Way. It's massive and might even orbit a black hole.

What Are the 8 Phases of the Moon, in Order?

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There are eight phases in the lunar cycle and the moon is in one of them every night. What are these phases of the moon?

88 Constellation Names (and 24 You Can Only See From the Northern Hemisphere)

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The night sky has been mapped and studied for thousands of years, with constellations serving as guides for navigation, storytelling and scientific observation. The International Astronomical Union officially recognizes 88 modern constellations, each occupying a specific section of the celestial sphere. Some date back to ancient Greek constellations, while other constellation names were introduced in the modern era.

A List of Demons Showing 25 Ways to Wreak Havoc on Mankind

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They go by many names. Some are symbols of destruction, others twisted forms of ancient gods, and a few look suspiciously like medieval nobles on a really bad day. Whatever you call them, this list of demons captures a lot of fear, folklore, and theology.

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