On average, 10 long-period and 20 short-period comets cross Earth's orbit each year. Short-period comets orbit the Sun in less than 200 years and exist in the Kuiper Belt just beyond Neptune ...
These would be more of those "short period" comets. One is called 73P/Schwassmann-Wachmann, which was a possibility considered for Europe's Giotto probe in the 1980s. Giotto eventually flew past ...
Great question! Assuming you’re referring specifically to the orbital period — in other words, how long comets take to make one revolution around the Sun, or a cometary “year ...
Most comets have elliptical orbits that bring them close to the Sun and then far out into the solar system. Some have long-period orbits taking thousands of years, while others are short-period ...