Often bringing one of the most vivid annual meteor showers visible in Earth’s night sky, the Perseids will peak on August 12 and 13. Usually, it delivers 50-100 “shooting stars” per hour at its height, putting on an impressive show.
Perseids Meteor Shower on the Way , “Sadly, this year’s Perseids peak will see the worst possible circumstances for spotters,” said NASA astronomer Bill Cooke, who leads the Meteoroid Environment Office at NASA’s Marshall Space Flight Center in Huntsville, Alabama. “Most of us in North America would normally see 50 or 60 meteors per hour,” he said, “but this year, during the normal peak, the full Moon will reduce that to 10-20 per hour at best.” Because the Moon is so much brighter than anything else in the night sky, it will wash out all but the very brightest Perseids as they streak through our atmosphere and burn up far overhead. As the full Moon subsides, the Perseids will begin to weaken around August 21-22 and cease completely by September 1. They’re the debris remnants of Comet Swift-Tuttle, a lumbering “snowball” composed of ice, rock, and dust, which orbits our Sun every 133 years. The comet itself was last visible to us in 1992 and won’t pass our way again for over 100 years: not until 2125.
How far back sightings of the Perseids actually go remains a matter of some disagreement, Cooke said. The comet itself wasn’t identified until 1862, but the meteor shower was seen over medieval Europe. The annual event came to be known as “the Tears of St. Lawrence,” named for the last of seven Roman church deacons martyred by the emperor Valerian in August of the year 258. So, while this is probably not the best year to make a special trip in order to see the Perseids, if you find yourself outside between midnight and dawn on August 13, don’t forget to look up anyway. Because you never know – you might just catch one of the bright Perseid meteors that defies the glare of the Moon. Also, be aware that the occasional early Perseid can streak across the sky as much as a week beforehand.
Source: This news is originally published by scitechdaily