Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our ...

Scientists suggest that a fifth, hidden force linked to dark energy may exist in the solar system but has not yet been ...

Thanks to the sheer mass of Jupiter and fellow gas giant Saturn, the Solar System barycenter is rarely in the center of the ...

Gravity has been tested extremely well inside the solar system. On cosmic scales, direct tests are harder. This study pushes ...

Astronomers have long been puzzled by a cosmic mystery: planets orbiting two stars—like Star Wars’ Tatooine—are surprisingly rare, even though they should be common. New research suggests the culprit ...

The science fiction blockbuster wowed audiences with its depiction of space travel and more. Here's what NASA staff and other scientists say about the basis for the amazing events of the film.

Gravity, electromagnetism, the strong nuclear force, the weak nuclear force. For decades, physicists have recognized exactly ...

For more than 300 years, Isaac Newton's simple rule about gravity has held up: the farther apart two objects are, the weaker ...

Max Planck Institute for Extraterrestrial Physics scientists have been able to disentangle the X-ray glow originating in our solar system from similar emission reaching us from deep space, using data ...

Osiris Reborn, but I can say confidently after an hour with a beta version that I don't want to have sex with anybody in it.

On a calm day, a light breeze might barely ripple the surface of a lake on Earth. But on Saturn's largest moon Titan, a similar mild wind would kick ...