Our coverage sheds light on the boundless darkness, the physical violence and the mysterious, awesome reaches of our universe. We ponder how it all began and about our place in the cosmos: Are we alone? Is there life on other planets? Will interplanetary travel save the human race? We also explore space through images, videos and illustration.
The tiny world of Ultima Thule, which lies at the outer edges of the solar system, is flattened like a pancake, with few craters.
Their observations confirm water lurks in the moon's subsoil, not just at the poles.
Planets closely orbiting red dwarf stars may have dynamic tectonic plates, making them more life-friendly than previously thought.