The best space images are the ones that put our humble place in perspective, whether it's an image from the moon or a particularly stunning nebula. This one accomplishes the task brilliantly, giving a glimpse of the arm of our galaxy hovering over the limb of our little planet. Watch a timelapse video below.
This video was taken by the crew of Expedition 30 on board the International Space Station, over a 15-minute period Dec. 29. The space station is passing over central Africa, near southeastern Niger, toward the south Indian Ocean and Madagascar.