ISS astronaut Don Pettit has shared a stunning space image, along with an unexpected description.The Latest Tech News, ...

Every 90 minutes, the ISS completes a full orbit around the Earth at a speed of approximately 28,000 km/h, which means astronauts see a sunrise or sunset every 45 minutes. Astronauts aboard the ...

Unlike Earth’s natural cycle, astronauts’ day-to-day lives are structured by Coordinated Universal Time (UTC), as there’s no true sunrise or sunset to guide their schedules in space.