WHERE: The sky over Toronto
WHEN: The evening and night of Saturday, March 19
WHAT: Because the moon’s orbit takes the form of an ellipse rather than a perfect circle, there are times when it is closer to the earth than others. Last night was one such occasion, called an extreme supermoon—or, more technically, a lunar perigee. What made last night’s event particularly special, according to the CBC, is that it coincided with the full moon, which last happened eighteen years ago. Extreme supermoons appear 10–15% larger, and substantially brighter, than moons on a typical night.