Are we all moving at $c$? [duplicate]

Is it true to say that all matter in the universe is travelling with velocity c through spacetime, but that for baryonic matter most of that velocity is through the time dimensions rather than the XYZ axes?

• This is one way of viewing things (which is not really too useful and tends to confuse people rather than enlighten them), yes.
– Danu
Jul 21, 2015 at 16:34
• possible duplicate of Why are objects at rest in motion through spacetime at the speed of light? Jul 21, 2015 at 16:46
• Jul 21, 2015 at 16:46
• Mark, see Ben Crowell's answer in the duplicate. Objects don't move through spacetime. Objects move through space. Jul 21, 2015 at 21:03

$$\left(\beta mc^2 + c(\alpha_1 p_1 + \alpha_2 p_2 + \alpha_3 p_3)\right) \psi (x,t) = i \hbar \frac{\partial\psi(x,t) }{\partial t}$$