Has anyone ever considered detachable rockets for aircraft? I'm thinking SpaceX style boosters on the wings that could return to the airport. My understanding i

Has anyone ever considered detachable rockets for aircraft? I'm thinking SpaceX style boosters on the wings that could return to the airport. My understanding is that getting up to altitude requires lots of power but cruising/gliding, not as much. Reusable hydrogen boosters for take off and electric cruise sounds like an eco (not to mention fun) way to fly