Ok, the HN pedants are out in force. The guy is an astrophysicist and knows what he's talking talking. He's not saying dark energy is a repulsive gravitational

Ok, the HN pedants are out in force. The guy is an astrophysicist and knows what he's talking talking. He's not saying dark energy is a repulsive gravitational force, he's saying it appears to us as such because we just see the macro effect of objects moving apart.