Ancient Astronauts carved in Hoysaleswara Temple?

This is Hoysaleswara Temple at Halebidu and here we can see a very strange carving: these figures look very similar to modern day astronauts. They are wearing helmets which cover their heads completely, and you can see that each person is wearing protective gloves in his hands, notice the cuffs of the gloves. If you observe closely, we can even see some of them have wires that go from one side of the helmet and hooked up to a spherical device at the back of the helmet. If you compare this carving with modern day astronauts, the similarity is uncanny. Yet, these carvings were created at least 900 years ago, some even say this temple was built many thousands of years ago. The question is, does this carving actually show astronauts, or does it depict something else?

             

Hoysaleswara temple, India, built with ancient machining technology?

This video show us some solid evidence of ancient machining technology at Hoysaleswara temple. There is something very strange about these pillars. If you look closely, you can see these minute circular marks all around the pillar. These are created as a result of machining the pillar on a lathe, this process is called turning. There is no way to achieve this with chisels and hammers manually. If you look at these pillars, it is crystal clear that they were made with machines.
In fact, archeologists agree that these pillars were created in a lathe, but offer no convincing explanation as to how these huge pillars were machined, 900 years ago. Nowadays, we are able to create these fascinating groves and designs on a lathe, but machining a 12 foot tall stone pillar would be a very difficult job, even today. So, how were these pillars created with amazing perfection in ancient time? Did ancient builders use machines and advanced tools, just like what we use today?If this is true, is it possible that they also carved these machines or tools in this temple?