GW190521
SpaceBlack hole GW190521 may be a wormhole from another universe
GW190521 could be a single gravitational-wave echo from a wormhole, specifically a wormhole created after two black holes merged in another universe.
Joseph ShavitGW190521 could be a single gravitational-wave echo from a wormhole, specifically a wormhole created after two black holes merged in another universe.
Joseph Shavit