But beyond that, there ought to be much more Universe beyond the limits of what we can presently see: the unobservable Universe. Thanks to our best measurements of the part we can see, we're ...

But what lies beyond? What about the unobservable Universe? That's what Gray Bryan wants to know, as he asks: We know the size of the Observable Universe since we know the age of the Universe (at ...

In 1935, Albert Einstein and Erwin Schrödinger, two of the most prominent physicists of the day, got into a dispute over the nature of reality. Einstein had done the math and knew that the universe ...

In short, the subject is in principle unobservable to science, not because it exists in another realm but because it is not part of the empirical world. It lies on the edge of things, like a ...

The research team from Jülich, Graz, and Berlin was thus able observe the wave function, which according to the rules of quantum mechanics is in fact considered unobservable. The results are long ...

In his new paper, Lieu argues that these singularities, though unobservable, could be the true engines of cosmic evolution, offering a radically different explanation for how the universe expands ...

13.8 billion years ago, the Big Bang occurred. The Universe was filled with matter, antimatter, radiation, and existed in an ultra-hot, ultra-dense, but expanding-and-cooling state. By today, the ...

As a joint physics-math major at the University of Auckland with no knowledge of astronomy, Charles Alcock stumbled upon a volume of papers from the mid-1960s about rotating neutron stars. A ...