Beach vacation spots for Many sungrazers share this fate. Those that survive the close encounter with the Sun do so because they are relatively large over km in diameter and structurally sound and because they are hurtling so fast at that point in their orbit the effect is similar to the rapid movement of a inger through the lame of a candle. As Fred Schaaf comments, If the Moon orbited Earth at such a speed, we would see it complete its orbit and go through its entire set of phases in less than an hour. If Earth traveled around the Sun at this velocity, each season would last about days, and the year would complete in less than weeks No other enduring, discrete, macroscopic object in our solar system travels anywhere near so fast. Short-Period Comets Short-period comets spend much or all of their time in the inner solar system. They include a wide range of comets and may be subdivided into two main categories, Halley-type more than -year periods but less than or equal to -year periods and Jupiter-type – year periods or less. Halley-type comets are, of course, named after Halley’s Comet. Beach vacation spots 2016.