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 ...

Einstein's theory of general relativity views time similarly to width, height, and length. As such, both time and space can be curved by gravity. This effectively means that time is slower the closer ...

Albert Einstein's theory of general relativity—which explains gravity as the product of the distortion of space and time—may not be universally applicable. This is the conclusion of physicists from ...

The concept of time travel, filled with magic, has long danced on the boundary between science and science fiction. From ...

What does it mean to be to space-time? The seemingly simple question gets to the essence of twentieth-century physics and has driven a hundred-year debate between philosophy and science. In Einstein’s ...

Einstein’s theory of special relativity tells us that for a moving object, time passes more slowly than for a stationary ...

A decade ago, scientists first detected ripples in the fabric of space-time, called gravitational waves, from the collision ...

According to Newtonian physics, the gravitational attraction between two masses is proportional to the inverse of the square of the distance between them – the inverse square law. However, as Most ...

Unfortunately, any work you do in the universe will have to be done the old-fashioned way. There may be an infinite amount of energy locked in the vacuum of space-time. So could we ever harness this ...

The former Google chief executive is taking a controlling interest in Relativity Space, which aims to build low-cost, reusable rockets to compete against Elon Musk’s SpaceX and to reach Mars. Eric ...