Measuring the time discrepancy between Earth and Mars will help make future navigation and communication systems on the Red ...

Learn how Albert Einstein’s theory reveals that time on Mars runs faster than on Earth — and why that tiny shift matters for ...

It is something like the "Holy Grail" of physics: unifying particle physics and gravitation. The world of tiny particles is ...

How confusing inevitability with reality built decades of paradox. What if general relativity never actually tells us that ...

Tracking the first astronauts’ visit to Mars won’t be as simple as watching a clock or marking days off of a calendar. Thanks ...

"The key result is that while many alternatives look very similar to the 'standard' black hole at today's image quality, the differences grow predictably as imaging resolution and fidelity improve, ...

One hundred years ago this Wednesday, Albert Einstein gave the last of a series of presentations to the Prussian Academy of Sciences, which marks the official completion of his General Theory of ...

Albert Einstein's theory of general relativity has been proven right again — and this time, physicists have pinned down just how precise it is: Any deviations from his theory of general relativity are ...

In another verification of the validity of Einstein's theory of general relativity scientists have used two finely tuned optical lattice clocks to make new ultra-precise measurements of the time ...

The supermassive black hole at the center of the Milky Way is the most extreme astrophysical object located within a million light-years of Earth. With an estimated four million solar masses, it's the ...

Why do we call the people in our families relatives? It is because they exist relative to us and us to them. Most of the time we see ourselves as the star in our own stories and others as planets ...