Ever wondered what gravity really is? Is it a force, or is there more to it than we know? In this video, we break down the ...

Discover how Einstein’s theory of special relativity reshaped physics by linking space, time, mass, and energy in a universe governed by the speed of light. Albert Einstein's 1905 theory of ...

So far, general relativity has held up well to various tests scientists have thrown at it. But there are signs that it's incomplete. Physicists say that within black holes and in other areas of ...

Fully relativistic N-body simulations would require ... use the minimum distance of particles in the two-particle centre-of-mass frame). Non-invariant criteria may lead to deviations from the ...

It was commonly explained by what we call “relativistic mass,” or the notion that as you got closer to the speed of light, the mass of an object increased, so the same force would cause a ...

WE propose to show that the constancy of rest mass during non-uniform movement is by no means a general feature of restricted relativity. It applies only to a special, though very important ...

Everyone knows that relativity plays hell with time, and that it can do a number on space, but what about mass? Why do objects get more or less mass depending on their relative speed? We’re ...

Well, its presented that the lorentz factor from relativity increases the mass of an object (the relativistic mass). Why doesn't that relativistic mass distort space-time? Oh, because relativistic ...

the mass of the spaceship would appear to increase from the point of view of people on Earth. But you don't necessarily need a spaceship zooming at near light speed to see relativistic effects.

But in this case the mass is what is now unfashionably termed 'relativistic mass'. This is defined as energy that changes with velocity. By convention, because it mucks with equations much longer ...