Why do you stand looking into heaven?

Earlier, I was thinking about the Ascension and about what happened just after:

And while they were gazing into heaven as he went, behold, two men stood by them in white robes, and said, "Men of Galilee, why do you stand looking into heaven? (Acts 1:10-11, RSVCE)

I thought, "Ah, the apostles were gazing into heaven. Maybe I can post something to the blog tying together astronomy and the Ascension." Naturally, a Dominican has beat me to it:

There is something proper about being astounded and in awe of a mystery, but there is something dangerous about being embarrassed by it. Sometimes it seems like we drift too close to the second option with the mystery of the Ascension. In addition to the nagging “why” questions, wondering if things wouldn’t have been better off if Christ had just stuck around, there are the dumbfounded “where” questions that wonder where Christ went when he left the apostles’ sight and where he actually is right now...

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