[neverevergiveup]

Yes, because no naturally occurring physical phenomena ever occur at regular cycles .. What if there is a continuously emitting celestial body that is blocked by other orbiting celestial bodies almost continuously - except for a small period every 16 days?

[Kirkwood]

It always pays to read the article before posting the obvious.

[fhayek]

Yes. There is potentially a completely natural explanation. Some rotating star with a electro-magnetic “geyser” of some kind that faces Earth once every sixteen days.

[PIF]

pulsars emit regularly - once every revolution

[Hot Tabasco]

What if there is a continuously emitting celestial body that is blocked by other orbiting celestial bodies almost continuously - except for a small period every 16 days?

My bowling team discussed that very topic last Friday night. We couldn't come up with an answer.....