Gravity pulls us to earth, a lesson you learn viscerally the first time you fall. Isaac Newton described gravity as a ...

Physicist Richard Lieu first explored the idea that gravity could exist without mass—now he’s got a new cosmological model ...

"The new model can account for both structure formation and stability, and the key observational properties of the expansion of the universe at large." ...

A new idea about cosmic expansion has emerged that might remove the need for dark matter and dark energy altogether.

Dr. Richard Lieu, a physics professor at The University of Alabama in Huntsville (UAH), a part of The University of Alabama ...

Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

Imagine an infinite universe expanding in all directions. Visualization is impossible. Questions abound. But cosmologist ...

Despite decades of searching for this signal, astronomers have yet to find it. The problem is that our Earth is too noisy, making it nearly impossible to capture this whisper. The solution is to go to ...

The idea of time travel—moving forward or backward through time—has captured human curiosity for generations. In tandem, the ...

Researchers say they discovered observational evidence of string theory, which could turn everything we know about the ...

Physicists have proposed a new model of space-time that may provide the 'first observational evidence supporting string ...

What is the other 95 percent? Dark Universe examines the invisible dark matter underlying galaxies that, together with dark energy, accounts for that other 95 percent of the universe’s total energy ...