Space
Space is Completely Silent
Sound needs a medium to travel. The vacuum of space has no molecules, so no sound wave can propagate — screams truly cannot be heard.
Space
A Day on Venus Is Longer Than a Year
Venus rotates so slowly that one day (243 Earth-days) exceeds its year (225 Earth-days). It also spins backwards relative to most planets.
Space
Neutron Stars Spin 700 Times per Second
Pulsars — rapidly rotating neutron stars — can spin up to 716 times per second, emitting beams of electromagnetic radiation like a cosmic lighthouse.
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