Time (𝑡):
Position (𝑥):
Velocity (𝑣):

Stationary Frame: 𝑣 = 0

𝑡	=	0years
𝑥	=	0lyrs

Moving Frame: 𝑣 = 0𝑐

𝑡′	=	0years
𝑥′	=	0lyrs

Transformation

𝑡′	=	𝛾(𝑡−𝑣𝑥/𝑐²)	=	0 (0−0·0)years
𝑥′	=	𝛾(𝑥−𝑣𝑡)	=	0 (0−0·0)lyrs

Spacetime Interval (Stationary): 𝑣 = 0

𝑠²	=	𝑐² 𝑡²−𝑥²
	=	(−)lyrs²
	=	lyrs²

Spacetime Interval (Moving): 𝑣 = 0𝑐

𝑠²	=	𝑐²(𝑡′)²−(𝑥′)²
	=	(−)lyrs²
	=	lyrs²