In 1543, Polish astronomer Nicolaus Copernicus developed the mathematics of the sun-centered solar system and caused a great shift in scientists' view of the universe. His work led to the recognition that Earth does indeed orbit the sun and to the follow-on speculation that other stars had planets circling them.

Electrons orbit around the nucleus of the atom.

Comet Siding Spring is one of the long-period comets, those that require more than 200 years to orbit the Sun. These comets come from the Oort Cloud, a sphere of about a trillion ancient, icy objects located hundreds to thousands of times farther than the planets' orbits.

This planet's orbit is congested with hundreds of captured moons.

On December 24, 1968, Apollo 8 astronauts Frank Borman, Jim Lovell, and Bill Anders became the first humans to orbit the moon.

The readiest support for planets' having confocal orbits is their sometimes retrograde motion.

As the ISS orbits the Earth, both the vehicle and crew members are in a constant state of free-fall causing astronauts to experience a feeling of weightlessness.

Newton explained the movement of orbiting planets as the result of motion along a straight line combined with the gravitational pull of the Sun. His laws are all based on the idea that nothing is naturally at rest. He reasoned that all heavenly bodies are constantly moving, with no limits on space and time.

Exoplanets are planets that orbit other stars than the Sun.

Ceres is located 415 million kilometers from the Sun and revolves around the Sun in an orbit between Mars and Jupiter.