How long does it take Pluto to orbit the sun? Learn more about how this planet makes one lap around our Solar System.

This model caught a periodic signal in the TTVs that was translated into a companion planet with a period of 6.24 orbital days and a mass about 2% the size of Jupiter.

Alex Foster’s debut novel, “Circular Motion,” is precisely 360 pages long, an appropriately exact total for a story about a near future in which international travel has been revolutionized ...

Circular Motion Alex Foster. Grove, $28 (368p) ISBN 978-0-80216-448-3. Foster combines climate-change parable and science fiction in his exciting debut, in which Earth’s rotation gradually ...

So, if some of a comet’s mass suddenly disappeared one day, its orbital period should remain unchanged. In the real world, however, mass does not simply disappear — it has to go somewhere.

The Raptors say Scottie Barnes has been diagnosed with a right orbital fracture. Barnes will be reevaluated in three weeks, and his condition will be updated as appropriate. — Marc J. Spears ...

By embracing circular design principles, reusability, and in-orbit servicing, this paradigm offers a compelling solution to the challenges posed by space debris and orbital congestion. Integrating TEK ...

The time taken to orbit the star once is called the planet’s orbital period, and it tends to stay pretty much constant. (For a circular orbit, the speed of the planet stays constant.

Orbital resonances can change how gravity influences two bodies, causing them to speed up, slow down, stabilize on their orbital path and sometimes have their orbits disrupted. Think of pushing a ...

The team discovered a very unique 20.5-minute orbital-period binary system, known as TMTS J0526, about 2,760 light years from Earth.