March Full Moon: Tonight's 'Blood Moon', how its deep red glow is caused
Tonight's 'Blood Moon' in March will showcase a total lunar eclipse, causing the moon to take on a deep red hue.
The 'Blood Moon' of March is set to occur tonight, March 3, 2026, marking an important astronomical event. Typically, this full moon is also known as the 'Worm Moon,' which signifies the first full moon of spring. However, this month's lunar event is particularly significant due to a total lunar eclipse, leading to the moon appearing in a deep red glow.
The phenomenon of the 'Blood Moon' happens when the moon completely passes into the Earth's shadow, allowing only filtered sunlight to reach its surface. This sunlight is altered by the Earth's atmosphere, which scatters the blue wavelengths of light while allowing the longer red and orange wavelengths to illuminate the moon. As a result, this gives the moon its distinct and captivating deep red hue during the total eclipse.
The slight tilt of the moonโs orbit relative to the Earth and Sun is why total eclipses do not happen every month. Observers eagerly await such rare celestial events as they provide not only a stunning visual experience but also an opportunity for educational engagement regarding lunar phases and the physics of light and shadows.