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.
Astronomers examine pairs of tiny colliding galaxies, twisting each other and tugging at their clouds of gas.
Assessing what the LIGO detection means for other gravitational wave searches.
Scientists detect billion-year-old gravitational message.