What is the universe made of? What role does “dark energy” play? This question has driven astronomers for hundreds of years. For the past quarter of a century, scientists have believed “normal” stuff like atoms and molecules that make up you, me, Earth, and nearly everything we can see only accounts for 5 percent of ...
A new study, led by researchers at the University of Cambridge and reported in the journal Physical Review D, suggests that some unexplained results from the XENON1T experiment in Italy may have been caused by dark energy, and not the dark matter the experiment was designed to detect. They constructed a physical model to help explain the ...
I’m sure most people have heard of the Big Bang Theory, and how that was the very beginning of the universe. Physicists Ahmed Farag Ali and Saurya Das are not so convinced. With their new model that has quantum correction terms that complement Einstein’s Theory of General Relativity, it shows that the universe has existed forever. The model also takes into ...
A lot of our notions about space are based on the concept of gravity, or more accurately our current understanding of it. Our understanding of gravity until the late 1990s was that gravity attracts things, holds things together, and in a way, stabilizes the universe as a whole. It was in 1998 that scientists stumbled ...
Two University of Hawai’i at Mānoa researchers have identified and corrected a subtle error that was made when applying Einstein’s equations to model the growth of the universe that didn’t take into account certain characteristics of dark energy. Physicists usually assume that a cosmologically large system, such as the universe, is insensitive to details of ...
If you think that the entire universe is made up of matter that can be seen or detected, you are dead wrong. In fact, almost 85 percent of the matter present in the universe is thought to be composed of “dark matter,” a form of matter that scientists are yet to directly observe. Dark matter ...
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