Dark matter made out of axions may have the power to make space-time ring like a bell, but only if it is able to steal energy ...

Find out more about available formats and browse any associated online resources. Spacetime and Geometry is an introductory textbook on general relativity, specifically aimed at students. Using a ...

One of these ideas is a concept known as ‘fuzzy gravity,’ which requires extra dimensions and discrete spacetime to explain irregularities. However, any theoretical deviations from general ...

Spacetime might seem smooth, but it could, at very short length scales, be quantized. Energetic neutrinos from gamma-ray bursts could provide a useful means to investigate further, and probe the ...

Scientists developed a new model, which provides mathematical evidence that singularities are hidden inside black holes.

More than seven decades later, mathematician Robert Monjo believes he has discovered a similarly significant double helix — ...