GENERAL KNOWLEDGE

Detailed explanation-1: -Gravity is the force that keeps planets in orbit around the Sun. Gravity alone holds us to Earth’s surface. Planets have measurable properties, such as size, mass, density, and composition.

Detailed explanation-2: -Every object in space exerts a gravitational pull on every other, and so gravity influences the paths taken by everything traveling through space. It is the glue that holds together entire galaxies. It keeps planets in orbit.

Detailed explanation-3: -Instead, planets orbit the Sun. They essentially are in constant freefall towards the Sun, but their velocity is tangential to their orbit, and that keeps them from ever falling in.