Aboard the International Space Station (ISS), astronauts can watch the sun "set," not behind a horizon of mountains or buildings, but behind the curved edge of an entire planet. In this recent image taken in early January 2026, the clouds above the Pacific Ocean are silhouetted in the golden light from the sinking sun. It's a breathtaking view that reminds us of our place in the solar system — that we're just one planet of many, each with its own version of the sunset.
