A week ago I made a 45-minute time exposure of the southern sky featuring the planet Mars. As the Earth rotated on its axis, the stars trailed across the sky. But take a closer look at the photo and ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Miguel Claro is a professional photographer, author and science communicator based in Lisbon, ...

Star trail photography documents the movement of the stars over a certain period. As the stars appear to move from east to west (due to Earth’s rotation), a long-exposure photograph of them will ...