Assuming you're referring specifically to the orbital period - in other words, how long comets take to make one revolution around the ... return near the Sun and update those orbits as needed ...

This is the fourth comet Gröller has discovered, but given its extraordinary distance, it was the most exciting find, he says ...

"We were quite surprised," Dones continued. "Spirals are seen in Saturn's rings, disks around young stars and galaxies. The ...

Most of the long-period comets in the Solar System come from the outer Oort Cloud. The inner region is much more stable. It's ...

Comet ISON - called by some the "comet of the century" made its way around the sun tonight, but we aren't sure if it survived the trip or not. What happened to the chunk of rock and ice determines ...

However, with each orbit around the Sun, a comet the size of Halley ... gravitation and planetary motions to compute the orbits of several comets. Halley found the similarities in the orbits ...

Around the time the eclipse image was taken, the comet was travelling at roughly 7,24,205 kms per hour, about 4.3 million kms from the Sun's surface. The comet was around 50 feet in diameter ...

Planets change orbit shape around Neptune’s size. Metal-rich stars help giant planets form. Eccentric orbits suggest chaotic planet formation.

Planets orbit the Sun in roughly circular paths, and moons orbit around planets. Asteroids and comets move in paths ... Between the orbits of the terrestrial planets and the gas giants, there ...