... The Astronaut Who Captured a Satellite . ... Earth at Night . ... This remarkably complete view of Earth at night is a composite of cloud-free, nighttime images. ... 47 Tuc Near the Small Magellanic Cloud . ... Globular star cluster 47 Tucanae is a jewel of the southern sky. ... In the Center of Saturns North Polar Vortex . ... These clouds lie at the center of the unusual hexagonal cloud system that surrounds the north pole of Saturn. ... Is the night sky darkest in the direction opposite the Sun? ...