Creepy looking...Sure it's a fungus?

Nasty! If you have the stomach for it, try image googling "insect eggs on grass." There are a few things that look a little like that. Keep an eye on it and let us know if anything hatches... just don't let them devour you when they hatch.

I've spent a few hours last night trying to find out what this could be using Google. No luck. I didn't find any images of fungus or insect eggs that seemed to resemble what I am seeing.

The closest thing I've found seems to be slime mold.... Not a positive ID though. Anyone have any experience with slime mold?

Slime mold was my first thought, but as you say, not a positive ID. Slime mold is more ugly than harmful. Has the appearance changed to be more slimy looking?

Update: the alien eggs hatched and no there is no trace. Radiation levels have returned to normal.

Must have been slimemold. No damage to the turf.

Glad to hear that there is no longer any trace of alien products on your lawn...

From my own experience with having slime mold appear on my mulch beds in recent days, I can say that what you have certainly doesn't appear to me to be slime mold though.