However, the total angular momentum today is too small to back this hypothesis.<ref name="NovaCelestia">Nova Celestia: [http://www.novacelestia.com/space_art_solar_system/earth.html#moon_earth_creation "The Creation of the Earth-Moon System"]</ref> | However, the total angular momentum today is too small to back this hypothesis.<ref name="NovaCelestia">Nova Celestia: [http://www.novacelestia.com/space_art_solar_system/earth.html#moon_earth_creation "The Creation of the Earth-Moon System"]</ref> |