May skies are brimming with action: shooting stars from Halley’s Comet, brilliant planets at dawn and dusk, and a once-in-a-lifetime nova that could light up the night sky any day now. Eta Aquarids & ...

May's full moon will appear full all weekend and beyond, but will peak on Monday (May 12). Here's everything you need to know ...

Look for the Leo half-moon high in the sky at sunset tonight. This waxing first-quarter moon marks a midpoint — positioned ...