Betz Mystery Sphere

Q.  Hi Lynn, what do you think the Betz Mystery Sphere is about? Here is a video explaining it: 

https://www.youtube.com/watch?v=46DPCSffJew

https://moviepilot.com/posts/2795404

A. When I tune into this, I see an ET connection.  It looks like these devices were used as location markers to track where they have been.  They also look to be a beacon for a possible return while extracting environmental information in their absence through a subtle pinging (???).  I see other "mystery spheres" out there doing the same thing, some have already been discovered. 

The outside of the sphere looks to be made from a rust proof metallic material (so it would not oxidize) and the interior looks to have some kind of magnetic gears and cylinders within a sealed environment.  I also hear there is a component of a lightweight gas inside (I want to say hydrogen or helium).  The combination of metallic components with the gas enables frictionless movement. ??

The environment (hot, cold) creates vibrations within the sphere (makes the cylinders and gears react).  I get noise can also force a vibration (because noise itself is a vibration). 

Who are the ETs that left them? 
They look like a relation to the Greys.  They are sage green, around 5 feet high, dark eyes, slits for nose holes and slits on either side of their head (no ears).  The most distinguishing feature is their hands, only three finger and a thumb "ish" finger, and the fingers looks to be a foot long.

Will they be back for them?
I hear "Yes, they have been coming back, and actually never really left.  They have had a presence here."

And that is all I have for this reading.  Thank you.  Love and light-