Yes, there are places on Earth where the Moon does not appear above the horizon. There are also places where the Moon is circumpolar and doesn’t set, at least for a period of time. To determine the ...

As someone who has spent thousands of hours observing the night sky, I like to think that I’m pretty familiar with it and able to navigate my way around with some ease. That’s certainly true on the ...

Today, I want to talk about the equatorial coordinate system. Start with this: What if we could project Earth’s coordinates of longitude and latitude into the sky? Latitude wouldn’t be a problem, but ...

The Airbus A330 that I fly across the Atlantic to any of several European cities is equipped with onboard navigation computers that tell us in the cockpit exactly where we are at any time. But when ...

Skywatchers are in for a rare celestial treat from June 22 as a major lunar standstill is set to occur. During this phenomenon, known as a major lunar standstill, the moon will rise and set at its ...

Is there ever a time that the Moon does not set or rise, just like the Sun does from certain locations on Earth? Can it happen during any phase of the Moon? Mark Narwa Ottawa, Ontario Yes, there are ...