Perseids peak Wednesday: up to 100 meteors per hour
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- Perseid meteor shower peaks Wednesday night into Thursday morning across the northern hemisphere, with NASA estimating 50-100 meteors per hour under ideal conditions and the American Meteor Society projecting 30-50 per hour from rural US regions.
- The peak coincides with a total solar eclipse visible from Spain, Iceland, and Greenland and a six-planet parade, though optimal fireball viewing comes after eclipse totality ends.
- Comet 109P/Swift-Tuttle is the source of Perseid debris, orbiting the sun every 133 years with no return visit until 2125; observations of this shower date back over 2,000 years.
- A new moon during peak eliminates lunar glare — University of San Francisco astronomer Aparna Venkatesan called the moon "such a diva" and said new moon means "we don't have moonlight flooding the sky."
- McDonald Observatory astronomer Zach Vanderbosch recommends watching between midnight and dawn when constellation Perseus is high in the northern sky, giving eyes a half hour to dark-adapt and avoiding phone screens.
Why it matters: The Perseids' peak coincides with a new moon — meaning zero lunar glare — and a total solar eclipse visible from Spain, Iceland, and Greenland, stacking three rare celestial events into one week. Under the conditions NASA describes, viewers in dark-sky locations between midnight and dawn could see up to 100 meteors per hour, making this one of the best viewing windows in years.
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