METEOR SHOWERS
Most of us have heard of the Perseids that happen sometime in August, the Perseids are the crème de la crème of showers with an hourly rate at peak of 110 - 150 Meteors; additionally, although not as well know, we have the Quadrantids in January with an impressive hourly rate at peak of 110-120 Meteors, with the Geminids matching this count in December and the hourly count is growing every year.
We have numerous Meteor showers every year but the majority have less than 10 an hour, so only the major showers will be listed.
So what is a Meteor? and where do Meteors come from? Lets start with the Perseid Shower as most people have heard of it. Comet Swift-Tuttle and the majority of the major showers involve a comet. Comet Swift-Tuttle has 133 yearly orbital path around the sun and when the comet is close enough to the sun it heats the comet releasing gas and dust (small particles about the size of a grain of sand and they are called Meteoids) the Meteoids are left in the orbital path of the Earth, when the earth passes throw the Meteoids they burn up in the Earths atmosphere causing a bright streak in the sky (a Meteor). on a side not, if the Meteoid is large enough not to burn up in the atmosphere and lands on the Earths surface its now called a Meteorite. Not all Meteor Showers are from the leftovers of comets, the Geminids and Quadrantids are from Asteroids. All Meteor Showers have a radiant point, this is where the Meteors enter the earths atmosphere shooting off in all directions. The radiant point moves across the sky and when the shower is at its peak this is when the shower claims it name  i.e. the Perseids  is in the constellation Perseus.

List of services

Jeff Sullivan Front Cover Photo Flickr Page More info from EarthSky
Share by: