[conservatism_IS_compassion]

Light has mass and momentum - a photon is basically an electron moving at light speed.

This should be in breaking news. Way I learned it in the Dark Ages, light had zero rest mass but a nonzero momentum because of its energy, basically. An electron had a small but nonzero rest mass.

[reed13k]

light doesn’t rest and momentum requires mass as part of the equation.

p = m • v

momentum = mass x velocity