Gravity provides the force needed to maintain the stable orbit of planets around a star and also of moons and artificial satellites around a planet. The moons around planets in the Solar System ...

The Sun is the largest object in the Solar System. The Sun’s huge gravitational field keeps many other objects – planets, dwarf planets, asteroids and comets – in orbit around it.

Astronomers have discovered that our solar system traveled through a dense, star-forming region near Orion about 14 million years ago. This cosmic journey may have altered Earth’s environment, ...