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[MCU] Are the Infinity Gems attracted to Earth for some reason, or are they simply attracted to each other and Earth happens to be the point of convergence?

Asgardian library intern here. 

We don't have a library anymore thanks to some recent stuff that would take too long to explain. New king wants everything we have on the Infinity Gems, which (if you don't know) are essentially little pieces of what existed before... well, everything. I've been sifting through what we have left and I can't help but notice a pattern.

Asgard has been tracking these stones as their incidents tend to draw a bit of attention. Almost every recent incident of the Infinity Gems has led them on a path through Midgard, or as most of you may know it, the planet Earth. I find this peculiar. Our own politics have intertwined with two of the gems, the Tesseract and the Aether, both of which caused large incidents that concluded in New York and London, respectively. Loki's mind gem, once a part of his scepter, caused a large-scale incident with a self-aware security system in Sokovia. At first I assumed the stones might be tied somehow to Asgard, since these events were so connected to Thor and Loki. More evidence has shifted my theory.

I overheard Thor himself speaking of a similar aura he felt when he encountered the sorcerer, Doctor Steven Strange. He suspects there may be another stone in his possession, and this would match up with scattered reports of a strange event in Hong Kong; though our scientists involved in Midgard studies were not able to find any direct evidence. Some ancient texts in the old library pointed towards a very powerful artifact of an ancient mystic order that could potentially be an Infinity Stone. If so, it has been located on Earth for a very long time and without intervention from Asgard. We are waiting to ask Thor if the object looks familiar to him from his visit with Doctor Strange; the object is eye-shaped and that is currently a sore topic.

The only stone we have tracked that hasn't found it's way to Earth is an Infinity Gem referred to as The Orb, which sparked a massive battle between the Kree and the Nova Corps. Interestingly, however, it does appear that the conflict was solved by a group of mercenaries that was led by an Earthling named Peter Quill. This, for me, was too much of a coincidence as Earthlings are extremely rare in that part of the galaxy.

My hypothesis is that these Infinity Gems may have a connection to the Earth in some meaningful way. Every Infinity incident thus far has touched the Earth, or someone from it. My other thought was that perhaps the stones actively seek out one another, desiring to be linked due to some cosmic energy shared between them. Perhaps the Earth was just a convenient meeting spot for fate once a few of the stones happened to converge there? Could the stones be somewhat sentient in that case? Did The Orb intend for Peter Quill to reunite it with the other gems?

I need more information to confirm my theories, and much of what we had has been destroyed. If anyone out there has relevant information, it seems to be increasingly urgent that we solve the mysteries of these stones before they cause more massively destructive incidents on Midgard. There is a chance Asgardians will be calling Midgard home in the near future and we would all prefer that no spellbound robots drop our continent out of the sky (long story). 

Can anyone aid us in our research?
gpt
Well, Odin (possibly) used the Space Stone to *make* the Rainbow Bridge, then hid it away on Earth, one of the Nine Realms of his domain. 

Also hidden on Earth was the Aether, or Reality Stone. Since this was hidden by Bor, Odin's father, and was done so secretly, nobody knew. But, as one of the Nine Realms, it made a suitable hiding place. 

Basically, both Odin and his father thought Midgard was the best of the Nine Realms for hiding an Infinity Stone on. 

We don't know how the Time Stone ended up on Earth. The Eye of Agamotto was made by the first Sorcerer Supreme, "thousands of years ago". We don't know if that was pre-Bor or post-Bor, but it seems unrelated. 

The Mind Stone was sent to Earth specifically *because* the Space Stone was there, in an attempt by Thanos to claim it without showing his hand. 

The Power Stone, thus far, has never been to Earth (as far as we know), but has been touched by a half-Earthling. 

It's possible that this is Fate, guiding all the Stones towards a certain place in space and time. Perhaps they are destined to be together again, at least once.

But most of them have a good reason for being there, instead of anywhere else in the Universe.