The Perseid meteor shower peaks Aug. 12 to 13 and the stars are aligning for a really big show, according to Western's Denis Vida.

Sunday, Aug. 8, marks the arrival of a new moon, so the sky will be relatively dark and forecasts to be ideal for a viewing of the annual meteor shower on Wednesday or Thursday night.

A new moon is when the sun and moon are close together as seen from Earth, so both are not visible during the 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.

All of the meteors are coming from the same direction—a specific point in the constellation of Perseus.

Many Perseid-related news stories and social media posts state that the maximum rate is about 100 meteors per hour, which is a lot. So, folks get excited and go out on the peak night, braving mosquitos and other nightly hazards. But they are often disappointed; we routinely hear, "I went out and only saw a few meteors. Not even 20, much less 100!" And they would be right. The problem is that the 100 per hour is a theoretical number used by meteor scientists and does not convey what people are actually going to see.

In the 1980s, meteor researchers were searching for a way to compare the meteor shower rates observed by various individuals and groups across the globe. People were reporting the rates, but the differences in sky conditions, radiant altitude and observer eyesight made getting a comprehensive view of shower activity difficult.

So, the meteor researchers put their heads together and came up with the concept of a ZHR, or Zenithal Hourly Rate. The ZHR is what you get after you correct the observed rates for the sky conditions, the altitude of the radiant above the horizon and observer biases.