Stars are aligning for 'mythic' Perseid meteor show
The forecast looks good for a really big show in the sky next week, according to Western University’s astronomy department.
The Perseid meteor shower peaks Aug. 12-13.
The arrival of a new moon is Sunday, Aug. 8, so the department says the sky will be relatively dark and forecasts to be ideal for a viewing of the annual meteor shower on Wednesday or Thursday night.
“If you happen to find yourself outside of the city or perhaps on a beach on Wednesday or Thursday night, look up! Every couple of minutes or so you will see a bright meteor zipping across the sky,” said Vida, a postdoctoral associate in Western’s department of physics and astronomy.
A new moon is when the sun and moon are close together as seen from Earth, so both are not visible during the night.
All of the meteors are coming from the same direction – a specific point in the constellation of Perseus. And even though Perseus was a mythical Greek hero, the meteors have little to do with myth, said Vida.
The Perseids are millimetre-sized dust particles, which enter the atmosphere at a hypersonic speed of 60 kilometers per second. That’s about 30 times faster than the F-35 fighter jet.
Despite their minuscule size, they have so much energy that when they collide with air molecules, electrons from the atmospheric atoms and those released from the meteoroid can be excited or even ‘ripped’ away entirely from their host atom and this makes the atoms glow.
“It only takes a brief moment before the atoms capture an electron and emit light, which is when you can see a glowing trail in the sky,” said Vida, project lead of the Global Meteor Network.
The Perseids will be visible this year as the new moon will occur on Aug. 8, only a few days prior to the peak on Aug. 12. Vida says provided the weather is good and you are away from big city centres, the sky will be dark and perfect for viewing.
“The best show will be just before sunrise on either August 12th or August 13th,” he said. “But if you are planning to observe in the evening hours on August 11th or 12th, start after 10pm and look either east or north-west. If you can locate the Big Dipper in the sky, look in its direction and you are bound to see some Perseids.”
For best observing, Vida said allow your eyes to adjust to the dark for at least 10 minutes.
“Avoid looking at your phone, or if you do, make sure to crank that blue light filter to the max as red light will not interfere with your night vision,” he said.
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