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.
Just as sailors can look to constellations for their bearings, interplanetary travelers could use pulsars to navigate the universe.
On an April weekend, engineers, designers and astronauts-in-training met to test suits for commercial, suborbital spaceflight.
Signal hints at possible interactions between ordinary hydrogen and dark matter in the early universe, but some scientists remain skeptical.