Comets are thought to orbit the sun in either the Oort cloud or Kuiper belt. When another star passes by the solar system, its gravity pushes the Oort cloud and/or Kuiper belt and causes …

Isaac Newton, in his Principia Mathematica of 1687, proved that an object moving under the influence of gravity by an inverse square law must trace out an orbit shaped like one of the …

2019年4月23日 · The orbit of a comet can be defined with six numbers, called the orbital elements, and by entering these numbers into your favorite planetarium software, you can …

Comets go around the Sun in a highly elliptical orbit. They can spend hundreds and thousands of years out in the depths of the solar system before they return to Sun at their perihelion. Like all …

Comets come from regions of the outer solar system known as the Kuiper belt and the Oort cloud. Kuiper belt comets: About a billion comets more than 10 km across; About 100,000 comets …

Problem 1 – Astronomers measured two positions of Halley’s Comet along its orbit. The x and y locations in its orbital plane are given in units of the Astronomical Unit, which equals 150 …

Where do comets spend their time? Why do some comets come near the Sun and become bright? What makes these comets different? And how is it that some comets, like Comet …

2024年9月12日 · Comets reach their maximum orbital speed at perihelion, the point of closest approach to the Sun. Comet velocities peak at approximately 70 km/s during this phase of …

2013年3月29日 · This animation shows two views of comet ISON's path through the inner solar system. The first is a view following the comet along its orbit. The second is a view …

2023年11月11日 · The source of comets can be determined through their orbital characteristics. Comets with an orbital period of less than 200 years are thought to come from the Kuiper Belt. …