Scientists have discovered that dark matter, the universe's most mysterious "stuff," obeys gravity on vast cosmological scales. This could help to dismiss the possibility of a fifth fundamental force ...

Does dark matter follow the same laws as ordinary matter? The mystery of this invisible and hypothetical component of our ...

A class of University of Texas astronomy students has discovered that nearby dwarf galaxy Segue-1 seems to host a ...

For years, dark matter has puzzled scientists, lurking in the universe’s vast expanse yet eluding direct detection. This ...

As New Horizons passed Pluto in July 2015, did the dwarf planet alter the probe's trajectory? Douglas KaupaCouncil Bluffs, ...

Earth and the Moon are forever locked in a gravitational embrace that has played a critical role in determining the fate of both worlds. Although they have grown more distant since their formative ...

A new international study has provided one of the clearest signs yet that dark matter—not a change in gravity—is responsible for the mysterious way galaxies spin. By studying some of the smallest and ...

No experiment has yet measured the speed of gravity, but that hasn’t prevented theorists from coming up with some answers. According to Newton, gravity acts instantly — that is, “action at a distance” ...

General relativity, Einstein's theory of gravity, is a purely classical theory that describes gravity as the warping of space-time geometry by mass and energy. But attempts to blend quantum theory ...

Quanta Magazine: Stacy McGaugh, professor and chair of the Department of Astronomy in the College of Arts and Sciences, discussed an alternative theory of gravity—a tweaked version of Einstein’s ...

"This work is a step toward understanding how quantum mechanics and gravity work together, a major unsolved problem in physics." The first step toward quantum gravity, the "holy grail of physics," may ...

Small and unassuming, Segue 1 is a nearby dwarf galaxy containing only a handful of stars—too few to provide the gravity ...