Oh! It is the open house for the Jet Propulsion Laboratory this weekend (both today and tomorrow)! I almost missed it since it was two weekends later last year.

Image composite brazenly taken from their website.
I went last year and had a great time and so I strongly recommend it. Go along for your own interest, of course, but if you have any kids, take ‘em along*. If interested, have a look at my detailed post from last year entitled “JPL the new Disneyland?”
As I said there:
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