https://www.reddit.com/r/askscience/comments/1x3kwp/if_emc%C2%B2_does_energy_have_gravity/
Is the internal energy still mass when viewed from the edge of the universe because the energy has not yet reached the edge of the universe?
https://www.reddit.com/r/askscience/comments/1x3kwp/if_emc%C2%B2_does_energy_have_gravity/
Is the internal energy still mass when viewed from the edge of the universe because the energy has not yet reached the edge of the universe?
