Gladden us with holy joys, almighty God,
and make us rejoice with devout thanksgiving,
for the Ascension of Christ your Son
is our exaltation,
and, where the Head has gone before in glory,
the Body is called to follow in hope. (Roman Missal)
The angels are right: there is no point in looking at the sky. We should instead look around us, to see and serve the risen and ascended Jesus living in our sisters and brothers.