Deep partial lunar eclipse will cast coppery glow on moon Thursday night
A very deep partial lunar eclipse on Aug. 27 will turn 96% of the moon's surface a coppery red, visible in full across the Americas. The eclipse peaks just after midnight EDT and is the deepest lunar eclipse worldwide until a total one on Dec. 31, 2028. The red hue occurs because Earth's atmosphere absorbs blue and yellow light while refracting red light onto the moon.
The eclipse begins at 9:23 p.m. EDT Thursday and concludes around 3 a.m. Friday, with maximum coverage occurring just after midnight. Observers across North and South America will see all phases, while European viewers catch only the final stages before moonset. Because 96% of the lunar disk enters Earth's umbral shadow, the event ranks as the deepest partial eclipse worldwide until the total eclipse of December 31, 2028.
The coppery appearance stems from atmospheric filtering: blue and yellow wavelengths scatter away, while red light bends through Earth's atmosphere and lands on the moon. Atmospheric conditions such as volcanic ash or desert dust can darken the shade. Unlike solar eclipses, this event requires no eye protection, and telescopes or binoculars will enhance the view.
This event could draw casual skywatchers and astronomy enthusiasts alike, offering a rare visual spectacle without specialized equipment. Schools and science communicators may use it as a teaching moment about orbital mechanics and atmospheric optics. For those in the Americas, the convenient evening timing may encourage broad public participation, potentially boosting interest in future celestial events and fostering greater engagement with space science.