It is assumed that comets have two distinct origins in our Solar System, the Kuiper Belt, a disc of icy debris stellar level, located about 50 astronomical units (AU) and the Oort Cloud, a sphere of cometary bodies, which inner edge is located about 50,000 AU. Comets of short cycle, with an orbit that takes a time less than 200 years, they come, usually in the Kuiper belt, while the long-cycle, such as Hale-Bopp, whose orbit takes a thousand times years, seems to come from the Oort cloud. Halley’s comet is unusual because it is short-cycle, although its origin is in the Oort cloud, and not in the Kuiper belt. Its orbit was originally shown that long-cycle, but was captured by the gravitational pull of the gas giants, so that has been stuck in the inner Solar System.
- Morris Daily Herald
Wilmington – A few surprises weather-related links for this team completes a two-year scientific study to understand the mechanism that produces heavy snow. - The Port Lavaca Wave
Calhoun County Judge Michael Pfeifer, a proclamation designating the week of February 22-28 as Severe Weather Awareness Week in Calhoun County. Pfeifer action with the action of Gov. Rick Perry, who has the week as Severe Weather Awareness Week in Texas. - Chicagoist
Photo by Katie Scully It will be an interesting evening weather, but for most of the day will be a mix of clouds and sun as clouds slowly but steadily increased during the day. On a positive note, the highlights will creep in the lower 40s today, a bit warmer than normal for this time of year. Overnight, temps will drop to the low to mid jaren’30 with rain developing. Of course … - The Herald Bulletin
Some Suns Hines morning will give way to clouds this afternoon. A development of the weather will be later this evening for a chance of rain to the area. Temperatures this afternoon will be the middle-40s and will not drop much tonight, with clouds and showers in the forecast. A few showers will linger into Wednesday, with highs in the 40s.