Are you ready for the next total lunar eclipse? It will be visible in Guelph, weather permitting, as long as you can wake up in the middle of the night.
Orbax, our favourite science communicator from the physics department at the University of Guelph, said the eclipse will start across most of North America around 2:30 a.m. on Friday, March 14, or “Pi Day,” reaching totality at 3 a.m. It will return to a normal full moon by 6 a.m.
He said he was happy to share about what he called the most ridiculously named astrological occurrence of the year. He said the March full moon is called the worm moon, among other names, but this year it has been dubbed the Full Worm Blood Moon because of the lunar eclipse.
“It’s the first lunar eclipse that we’ve been able to see in North America since 2022, so that’s kind of an exciting thing because it’s been three years. The next one that’s going to be visible will be a year from now, next March,” Orbax said.
He said lunar eclipses do happen twice a year and are visible somewhere on the planet. They are safe to observe with the naked eye, binoculars or a telescope, unlike a solar eclipse like we experienced last April.
“A lunar eclipse occurs when the moon actually falls into the earth’s shadow,” Orbax said.
It’s a bit complicated how it happens, but basically the moon doesn’t always line up in the earth’s shadow because its orbit is tilted in respect to the earth’s orbit around the sun.
He said this moon is called a blood moon because it will appear slightly red in colour during the eclipse. In ancient societies it would have been seen as a kind of omen.
“The earth’s shadow has two distinct parts,” Orbax said. “When the moon passes into the earth’s penumbra, this faint shadow darkens the moon slightly. When it passes into the umbra, the moon will briefly completely darken and then turn red. At this point we have a total lunar eclipse.”
Why is it red? He explained that as the sun’s light passes through the earth’s atmosphere it scatters and results in shorter wavelengths, like blue light, being diverted away from the moon. The longer wavelengths, like red light, are what he said bathes the moon.
“If you happen to be standing on the moon during the lunar eclipse, you’d see a red ring emanating around the earth, which is all that remains of the light escaping earth’s atmosphere of all the sunrises and sunsets taking place on the edge of the earth,” Orbax said.
To see the eclipse from earth, all we have to do is stay up late and look up. Since it will be March break for school-aged kids, it might be worth getting outside. If you miss it, Orbax said that NASA typically does stream footage and post all kinds of images at .
Orbax said he hopes to encourage people to learn and explore.
“Sometimes all it takes is a little bit of perspective to look at our place in the universe and realize how lucky we are to live on this blue ball that’s spinning around in space among a bunch of other balls that are spinning together,” he said. “I think it’s an incredible thing to see that we’re part of this giant cosmic machine that just keeps chugging along.”
Space enthusiasts of all ages can check out Orbax’s videos for more information about monthly events. His “March 2025 Star Gazing Guide” is up now on .
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