“Dark energy,” a mysterious force that counters gravity, has been proposed to explain why the universe is expanding at an accelerating rate. Mathematicians at UC Davis and the University ...

The international cosmic ray observation mission reveals a key feature of these rays, marking a major advance in ...

Scientists have detected changes in cosmic rays that could reveal the true origin of these extreme particles in the universe.

The universe’s accelerating expansion has long puzzled physicists. For decades, dark energy, an unseen force thought to make up nearly 70% of the cosmos, has been the leading explanation. But a new ...

Fading candle: remnant of a type Ia supernova called SNR 0509-67.5. (Courtesy: NASA/CXC/SAO/J Hughes et al/ESA/Hubble Heritage Team) The mysterious substance known as dark energy thought to be pushing ...

Scientists studying mysterious ultra-powerful cosmic rays have uncovered a surprising hidden pattern that could finally help ...

New York University physicist Georgi Dvali concludes that the cosmic acceleration of the universe may be caused by the modification of standard laws of gravity at very large distances, and not by &#34 ...

In all directions of the sky, cosmic rays rocket through space with incredible speed. These "rays"—which mostly consist of protons—are some of the most energetic particles in the universe. For nearly ...

If it’s possible to make a mystery more mysterious, then a study of dark energy by astronomer Bradley Schaefer of Louisiana State University in Baton Rouge may have done so. Earlier this month, at the ...

This time ten years ago, two independent teams of researchers in the US were deliberating over whether to go public with a discovery that would change our view of the universe forever. It concerned ...

If you are still trying to get to grips with the idea that the Universe's expansion is speeding up, check out Schrabback and colleagues' scrutiny of the largest continuous area ever imaged with the ...