Star trails are long-exposure photographs of stars taken as Earth turns, resulting in streaks of light across the sky. Here's how to photograph star trails.
Dark nebulae are clouds of gas and dust in space. They block the light of stars shining behind them. Often, they're locations where new stars are forming.
Here's something you - or your kids - might have noticed: When you're in a moving car, earthly objects get left behind, but the moon seems to follow. Why?
When is the next total solar eclipse? If the April 8, 2024, total solar eclipse gave you the bug for eclipse-chasing, you'll want to know: Find out here!