All-season Triangle

Night Sky Sights

This May, Find the Star Pattern That Spans All Seasons

Widen your view to see the All-Season Triangle asterism, whose stars span the year.

Labeled Big Dipper

Night Sky Sights

The Big Dipper: Hop to Spring's Sky Sights

The Big Dipper is one of the most familiar sights in the Northern Hemisphere’s night skies. You can use its stars to locate other fun targets.

Moon phases in perspective

Moon

August Will Have Two New Moons! What’s the Big Deal?

First there were "blue Moons;" now there are "black Moons." What do these terms mean . . . and do they matter?

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