Happy Moon Day (just over an hour late)

I first heard this poem at Contata 1998. The fan who recited it did not know the author's name, only that the poem was first published in Analog magazine in July of 1979.
If anyone knows who the author was, or how to find out, please let me know. -B.

Sonnet: 20th July, 1969
They made it, we all made it, just a bit.
Like Vikings leaving runes and little more,
Taking the lesser light where God had placed it,
To show ourselves just what a heaven's for.
They loped like diving, suited kangaroos,
Over that sterile world of one-night stands
Driving golf balls and moon-buggies to amuse
The children, while the stars slipped through our hands.
They're gone now, to their shrinks and shrunken space,
The praises theirs; 'tis ours to wonder why
The world's still flat, and dreams are out of grace.
So I, believing less each summer, pry
Open that lost, last year to see the bright
Earth-jewel, smooth and blue, in velvet night.