Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the northern hemisphere).

See spectacular images of September’s full Harvest Moon rising into twilight alongside Saturn as skywatchers around the world watched the celestial pairing.

September’s full Harvest Moon will rise beside Saturn this weekend — and its unusual celestial geometry means the spectacle doesn’t end after one night.

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the northern hemisphere).

Fall begins with the September equinox this week, but despite what its name suggests, day and night won’t actually be equal. Here’s why — and when they will be.

Everything you need to know about October’s full Hunter’s Moon — including exactly when it turns full, which evening offers the clearest view and why it’s a supermoon.

October’s full Hunter’s Moon will dominate the night sky on Monday, Oct. 26. Here’s exactly when it rises and the best time to see it.

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the northern hemisphere).

The zodiacal light — an eerie pyramid of sunlight reflected by interplanetary dust — is about to appear before sunrise. Here’s when and where to look.

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the northern hemisphere).