Why does the Earth spin? Sara H., age 5 ... It is surrounded by a thin disk of dust, gas and little bits called planetesimals; they range in size from a grain of sand to rocks maybe up to the ...

Although we can't feel Earth spinning, the daily sunrise and sunset are reminders that our planet is in constant motion. But do we know which way Earth is spinning? And is it the same direction as ...

followed by tsunamis generated by the displacement of oceans previously held in check by the planet's spin. Astrophysicist Neil deGrasse Tyson starkly predicts that a momentary stop in Earth's ...