We can obtain the transformed components of this vector in the moving frame by using the Lorentz transformations, or we can read it directly from the figure because we know that ⁠ ( m c ) ′ ′ = γ γ m c ⁠ and ⁠ p ′ ′ = − − β β γ γ m c ⁠, since the red axes are rescaled by gamma. Fig. 3-8b illustrates the situation as it appears in the moving frame. It is apparent that the space and time components of the four-momentum go to infinity as the velocity of the moving frame approaches c.