A groundbreaking theory suggests that dark matter—the invisible material shaping galaxies—may have formed before the Big Bang ...

Mysterious dark matter makes up 85 percent of matter in the universe, and of the remaining 15 percent, scientists couldn’t ...

An extremely bold hypothesis proposes transient temporal singularities remove the need for dark matter and dark energy.

If dark matter is creating positrons in the CMZ, those particles will eventually slow down and eventually annihilate with electrons in the environment, producing gamma-rays at exactly 511keV energy.

The CMZ spans almost 700 light years and contains some of the most dense molecular gas in the galaxy. Over the years, ...

Astronomers have long been puzzled by two strange phenomena at the heart of our galaxy. First, the gas in the central ...

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

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 ...

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

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

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