Former Google Chief Executive Eric Schmidt is the new chief executive of Long Beach based Relativity, which aims to compete with other rocket companies. Leader: New Relativity CEO Eric Schmidt. (Photo ...

Einstein's theory of relativity, first formulated in 1905, offers a profound explanation of the behavior of objects in space and time. While its applications are often associated with phenomena like ...

Physicists have measured Albert Einstein's theory of general relativity, or more specifically, the effect called time dilation, at the smallest scale ever, showing that two tiny atomic clocks, ...

Albert Einstein is arguably the most influential scientist of the 20th century. His general theory of relativity changed our understanding of space and time, becoming one of the two pillars of modern ...

Why can't anything travel faster than the speed of light? Do black holes really suck? And why is the universe expanding? These are just a few of the questions author and astrophysicist Jeffrey Bennett ...