The largest-ever three-dimensional map of the cosmos, plotting out some 15 million celestial objects, could help reveal the ultimate fate of the universe. Astrophysicists know that the universe is ...

New data further challenge the best scientific theory of the history and the structure of the universe. But a separate recent ...

The images released Wednesday by the European Space Agency’s Euclid mission includes a preview of three cosmic areas it will spy in finer detail, mapping the shapes and locations of faraway galaxies.