gravity of the earth

Aliens have not appeared after all these years, while there are billions of planets out there? Humans perhaps not so lonely?

A weak gravitational force can cause some health effects such as muscle shrinkage, weight loss, and weakness in the heart.

Those who saw the Titanic movie knew that the giant luxury ship sank on April 14, 1912, by crashing a large iceberg about 640km from Canada's Newfoundland. It sank into the ocean

The proximity between the Moon and the Earth is the cause

The gravity of the Earth and the dilution of the atmosphere are barriers that prevent aircraft from flying into space like spacecraft.

The secret to heavy commercial aircraft weighing nearly 500 tons is not sucked down by Earth gravity is applied the same principles as flying birds.