What If Earth's Magnetic Field Vanished for 24 Hours?
If Earth's magnetic field vanished for exactly 24 hours, people at ground level would not sudd…
How Did Mark Watney Make Water on Mars in The Martian — and Would It Really Work?
In The Martian , stranded astronaut Mark Watney makes water by obtaining hydrogen from leftover hy…
Why Does Neptune Have the Fastest Winds in the Solar System?
Neptune has the fastest measured winds of any planet in our solar system, with cloud motions reach…
What Would Happen If the Sun Suddenly Became 10% Hotter?
What if the Sun suddenly became 10% hotter tomorrow? Earth would not burst into flames, but the ex…
What Would Happen If Earth Had Two Moons Instead of One?
Imagine stepping outside on a clear night and seeing two moons crossing the sky instead of one. E…
Where Is the Edge of the Solar System — and Have We Reached It Yet?
Imagine sailing away from Earth, past Neptune, past Pluto, and into darkness. At what point could …
What Would Happen If Saturn’s Rings Suddenly Disappeared?
Picture pointing a telescope at Saturn tonight and finding a plain, pale-gold globe where its famo…
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