Is this a balloon, a CGI effect, or something truly mysterious? Our experts have weighed in on this, and this comment sums up the opinion of those who have sent us replies:

"They all have in common the fact that:
 
"1) no cross-confirming videos ever appeared, despite the humongously spectacular appearance of these alleged objects.
 
"2) they could all have been easily produced via CGI.
 
"3) none of them had audio tracks that convincingly (or at all) included expressions of amazement.
 
"This one is no exception to the above patterns, but it has two additional telltale features:
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If this is really starting to happen again, there will probably be more sightings, but hopefully not a catastrophe such as happened the last time.
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