NASA astronaut Don Pettit's latest photography from the International Space Station showcases not only his visual prowess, ...

The search for quantum gravity has gone on for 100 years, but it is not the only unification challenge in physics. Many of us ...

In it, he suggested that gravity is not a force, as Newton had believed, but the result of a curvature of the space-time continuum -- the four dimensional world in which we live. He used a thought ...

Albert Einstein’s theory of gravity, general relativity, is famously incomplete. As proven by physics Nobel laureate Roger Penrose, when matter collapses under its own gravitational pull, the result ...

He discussed space of four or more dimensions, and paved the way for the General Theory of Relativity Just 100 years ago the young Bernhard Riemann gave his famed paper on the foundations of geometry.

It turns out that there is a certain mathematical object called the Alena Tensor, which allows the description of physical phenomena in such a way that the curvature of space-time can be smoothly ...

This quirk of space-time is not only observable and measurable, it's an excellent tool for understanding the Universe. But a team of researchers has just found that the predicted curvature of ...

This quirk of space-time is not only observable and measurable, it's an excellent tool for understanding the Universe. But a team of researchers has just found that the predicted curvature of ...

Gravitational physicists explore the implications of the general theory of relativity, in which gravitation is a consequence of the curvature of space and time. This curvature thus controls the motion ...

Neptune should also soar high enough for a pilot and eight passengers or "Explorers" to see Earth's curvature and soak ... looking at the Earth from space for a long time," MacCallum said, adding ...

That describes the largest structures in the universe in terms of curvature of space and time. On the other hand, we have quantum theory. Which very successfully describes the elementary particles.