Hijacking the box office crown from “Captain Phillips,” Warner Bros.’ 3D space phenom “Gravity” is expected to land in the $30 million range this weekend, beating Sony’s adult-targeted wide release, ...

Gravity not only maintains the stability of these orbits but also influences phenomena like tides on Earth, caused by the moon's gravitational pull. The paper, authored by David Jewitt from the ...

DENVER — Small but rowdy space rocks pushing and jostling one another may have created the unusual orbits some astronomers cite as the signature of the hypothesized "Planet Nine," a new study suggests ...