The red tint appears because the only sunlight reaching the moon passes through Earth’s atmosphere, according to NASA.
“The more dust or clouds in Earth’s atmosphere during the eclipse, the redder the Moon will appear,” the space agency wrote on its website. “It’s as if all the sunrises and sunsets in the world were projected onto the Moon.”
The May Full Moon is sometimes known as the “Flower Moon” in traditional folklore, as it typically occurs at a time of year when spring flowers are emerging.
NASA presented live broadcasts of the eclipse from locations around the world, including Alabama, Italy, Spain and New York. The scientists also answered questions on the live stream. From start to finish, the eclipse lasted just over five hours.