The protons and neutrons cluster together in the center of the atom in what is called the nucleus. The electrons orbit around the nucleus.

Valentina Tereshkova made 48 orbits of Earth. She spent almost three days in space.

The Europa Clipper spacecraft is scheduled to launch in 2024 and is being designed to conduct a series of close flybys of Europa as it orbits Jupiter.

You’re going into orbit, you stupid mutt.

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.

Eris is the largest known dwarf planet in the solar system. Its elongated orbit takes it far outside of the main region of the Kuiper Belt.

The planets follow elliptical orbits.

Laika was the first animal to orbit the Earth.

In 1632, Galileo published a book that said the Earth orbited the Sun. The Catholic Church arrested him and put him on trial.

“Today a new era in human spaceflight begins as we once again launched American astronauts on American rockets from American soil on their way to the International Space Station, our national lab orbiting Earth,” said NASA Administrator Jim Bridenstine.