Perseid Meteor Shower Peak Tonight: Up to 20 Meteors Per Hour Visible

**Key Facts** The Perseid meteor shower will peak on Wednesday night (August 12) at approximately 10pm, offering Hong Kong residents a chance to witness up to 20 meteors per hour streaking across the northeastern sky [1]. The Hong Kong Space Museum will host a live stream event from 10pm to 11pm on its official YouTube channel, featuring explanations from Assistant Curators to help the public understand astronomical knowledge [1]. **Optimal Viewing Conditions** According to the Hong Kong Observatory's nine-day weather forecast, Wednesday will see mostly clear skies, creating favorable conditions for meteor watching [1]. The meteor shower occurs during the new moon phase (Lunar July 1st), meaning virtually no moonlight will interfere with observations throughout the entire night, making this year's viewing conditions particularly good [1]. The meteor shower's radiant point will rise from the northeastern horizon at around 10pm on Wednesday, and as the radiant climbs higher, the number of visible meteors will increase until sunrise on Thursday [1]. **Understanding the Meteor Shower** The Perseid meteor shower originates from its parent comet, 109P/Swift-Tuttle, which leaves behind debris particles as it travels through the solar system [1]. When Earth passes through these debris fields, the particles enter Earth's atmosphere and create the spectacular meteor display, with all meteors appearing to radiate from the same point in the sky—the radiant located in the Perseus constellation [1]. **Reality Check on Visibility Rates** While the theoretical "zenith hourly rate" for the Perseids is 100 meteors per hour, Space Museum experts clarify this represents an idealized maximum value that assumes perfect conditions: the observer's eyes are fully dark-adapted, the radiant is at the zenith, there is no moonlight or cloud interference, and the observation site has unobstructed views with zero light pollution [1]. Such ideal conditions are practically impossible to achieve in Hong Kong's urban environment, hence the realistic estimate of approximately 20 visible meteors per hour under good weather [1].