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 ...

"This unique lensing configuration allows us to constrain both the Hubble constant and dark energy parameters simultaneously ...

The Sagittarius A* supermassive black hole at the core of the Milky Galaxy may be "warping the spacetime surrounding it into ...

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

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 ...

There’s so much mass in this megacluster that its gravity warps the fabric of spacetime to create a natural super-magnifying glass called a “gravitational lens.” It’s that which has ...

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 ...

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 ...