It IS Heaven on earth…
Jesus is present in His Gloriied form in the Eucharist.
You cannot divide the Trinity, so wherever Jesus is present, the Father and Holy Spirit are also there.
And wherever the Trinity is, there is the whole heavenly host, angels, saints, Our Lady.
Tho our eyes cannot see it, they are all present in the Holy Sacrifice of the Mass.
this from From Saint Francis of Assisi:
Let humanity kneel in fear, let the whole universe tremble, and let heaven rejoice when Christ the Son of the Living God is on the altar in the hands of the priest!
O wonderful ascent, O stupendous ascent! O sublime humility! O humble sublimity, that the Lord of the Universe, God and Son of God, should humbly hide himself, for our salvation, in what seems to be only a small piece of bread! Look, then, upon the humility of God! And pour out your hearts before Him. Humble yourselves that He might exalt you. Hold back nothing of yourselves for yourselves, that He may receive your all who gave His all for you!