The professor emeritus at Kyoto University wrote many books introducing the beauty of space and physics to general readers.

The findings resolve a long-standing problem in fundamental physics. Scientists at Hiroshima University have created a practical and highly sensitive method for detecting the Unruh effect, a ...

Ten years ago, astronomers made history when they first detected ripples in spacetime, called gravitational waves, from the ...

Why do some elements decay in minutes, while others last billions of years? Certain "magic numbers" of nuclear particles may ...

Einstein’s theory of relativity reveals a mind-bending truth – in the right conditions, time itself slows down. This isn’t ...

Science is a story of coming up with theories then doing our best to disprove them. That is especially true for theories on a ...

At just 25, Cecilia Payne-Gaposchkin applied quantum physics to a treasure trove of astronomical observations to show that stars are mostly hydrogen and helium.

Mathematical quirks of our universe have led some cosmologists to wonder whether the cosmos was actually born in a black hole ...

The speed of light, c, is not just a very large number. In modern physics it is a structural constant: the conversion factor ...

We often marvel at the genius of Albert Einstein, a physicist who revolutionized our understanding of the universe. Yet, even this formidable mind was perplexed by a grand scientific problem, one that ...

The first-ever detection of gravitational waves was made 10 years ago today (Sept. 14). In celebration, Space.com takes you ...

Is time something that flows — or just an illusion? Exploring space-time as either a fixed “block universe” or a dynamic fabric reveals deeper mysteries about existence, change, and the very nature of ...