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Rays of light

Physics

High-speed electrons prove Einstein was right about the speed of light

Albert Einstein predicted that the speed of light does not change just because you are moving – and now two experiments have shown just how right he was

News

Starlight stretched by Milky Way's black hole proves Einstein right

Space

Starlight stretched by Milky Way's black hole proves Einstein right

News

Artist impression

Space

Trio of stars shows Einstein is still right about relativity

News

space-time

Space

The space-time echoes that point to a new theory of reality

Features

gravity artwork

Physics

The big fudge: Welcome to the theory of not-quite-everything

Features

illustration of a white dwarf in front of a red star

Space

Mass of a white dwarf star directly measured for the first time

News

atomic clock

Technology

Atomic clocks make best measurement yet of relativity of time

News

Image of cat with a shadow of a cat's skeleton

Physics

Cosmic uncertainty: Your skull is an amazing physics lab

Comment

The warps in space that make Einstein's perfect cosmic accident

Space

The warps in space that make Einstein's perfect cosmic accident

News

Exclusive: Einstein reacts to discovery of gravitational waves

Space

Exclusive: Einstein reacts to discovery of gravitational waves

Einstein's theory of relativity predicted gravitational waves. Now, with their discovery, we have secured an exclusive interview* with the great man himself

News

Space

Revolution in physics as gravitational waves seen for first time

News

Space

Einstein’s last theory confirmed: A guide to gravitational waves

News

Space

Nowhere to hide - invisibility cloaks fail near light speed

News

Space

Pathfinder blasts off to look for Einstein's gravitational waves

News