Celestial fireworks treat for stargazers
PARIS — Stargazers will be treated to a spectacular fireball show early next week when Earth hits a belt of comet debris known as the Perseids, astronomers say.
The annual Perseid meteor shower, dubbed “the tears of St Lawrence” in honour of a martyred Christian saint, should peak in the wee hours of Monday and Tuesday with between 60 and 100 shooting stars per hour.
They will be visible over most of the world, but most clearly in the northern hemisphere, aided by an earlysetting crescent moon leaving a dark canvas for the celestial fireworks.
Cloudless skies permitting, the best viewing time will be the hours just before dawn on Monday and Tuesday, the head of U.S. space agency Nasa’s meteoroid office, Bill Cooke, told AFP.
“Go outside, allow about 30-45 minutes for your eyes to dark adapt. Lie flat on your back [on a sleeping bag or lawn chair] and look straight up: take in as much of the sky as you can,” he said by e-mail.
“My experience is that most people who are disappointed viewing meteors go out for only a few minutes expecting to see something: this will work only for major outbursts not normal meteor showers. So be prepared to spend at least a couple of hours outside; don’t expect to see many before midnight.”
According to the European Space Agency, the Perseids are sand- to pea-sized bits of rocky debris ejected by the comet Swift-Tuttle, which is slowly disintegrating on its orbit around the Sun.
Over the centuries, its remains have spread along the comet’s orbit to form a stream of particles hundreds of millions of kilometres long.
Earth’s path around the Sun crosses the stream every mid-August.