The Milky Way is warped, possibly as the result of a collision with another galaxy billions of years ago. Studying this warp could reveal more about the structure of our galaxy's hidden matter. The ...

In an interstellar race against time, astronomers have measured the space-time warp in the gravity of a binary star and determined the mass of a neutron star–just before it vanished from view. The ...

The warp in the Milky Way's spiral disk is precessing backward under the influence of the enormous mass of dark matter that forms an invisible halo around our galaxy, Chinese astronomers have ...