What If a Rogue Planet Entered Our Solar System? Could Earth Survive?
Could an unbound planet wander into our solar system and destroy Earth? Yes, a sufficiently close …
What If Earth Suddenly Doubled in Size? Could Humans Survive?
What would happen if Earth suddenly doubled in size? If its diameter doubled while its average den…
Could We Really Move Earth Through Space Like in The Wandering Earth?
In The Wandering Earth , humanity tries to save its home by turning the whole planet into a spacec…
Does Earth's Atmosphere Really Extend Beyond the Moon?
Yes. Earth’s atmosphere really does extend beyond the Moon, if we include its extraordinarily thin…
What If Earth Passed Through a Dense Cloud of Interstellar Dust?
What if Earth entered a dense cloud of interstellar dust? The greatest concern would probably not …
Why Are There No Green Stars in the Night Sky? A New White Dwarf Exception
Look into a dark sky and you can find reddish stars, icy blue-white stars, and many that seem almo…
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…
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