Without the pull of gravity to work against ... leads to persistent nasal congestion; causes tissues of the face and upper body to become swollen; affects the inner ear and vision; and even ...

But what is the primary cause of the tides there and elsewhere ... tides a day as our planet rotates on its axis. The moon's gravity pulls the ocean toward itself to create the near-side bulge ...

When teachers explain ocean tides, they frequently describe how the moon's gravity pulls on Earth and all of its water. This, they often say, leads to a gravitational imbalance, which stretches ...

In this Science Extra from "Jiwi's Machines," Jiwi demonstrates the concept of center of gravity by balancing books and a vase, illustrating how objects maintain balance and what causes them to ...