Hinduism is the first religion o have formed a Cyclic Theroy of Time, that is Time runs in cycles,
The Four Yugas, Aeons, Krutha, Tretha,Dwapara and Kali repeat themselves without end.
One approach to establishing the Multi verses is from the angle of the Atomic structure.
Please refer my posts under Multiverses.
The other is to find it at the Macro level.
The description of the Universe in the Hindu Puranas are quite detailed and they explain that there are many worlds with beings, that they intermingled, fought with each other.
Please refer my post Aliens in Ramayana, Mahabharata,Hinduism.
The description of the Constellations and their shifting movements as explained in the Hindu system is validated by modern Astronomy.
Our Pole Star shifts and so all the other stars with respect to our Sun.
The Universe contains billions of Stars and they their Planetary Systems.
Just as our Stars shift position in relation to our Sun, the billion Stars of the Universe shift.
The term Adhitya refers to Sun in Hinduism.
There are twelve Adhityas and Vishnu one among them.
He , as I explained in my post ‘Vishnu once in 6480 years, Astronomy Precession Equinox,’ emerges once in 6480 years with the changing Great Year, Yuga.
The Devi Mahatmiya describes that the Devi takes the Trinity of Brahma, Vishnu and Rudra around the Universe and shows them numerous Brahmas, Visnus and Shivas at work, before reaching Chintamani Gruha of the Devi.
Please read my post on Chintamani Gruha.
Now these countless Suns, having their own planets follow their own Laws, some physical laws are the same as ours,
People existing there travel among them, including the Earth.
As the Physical laws there are different so is the definition of Life.
The composition of Life there may be different from ours, they mayor need not have the basis Hydrogen,helium or Carbon as the building block of Life.
May be they might not need Amino Acids.
I am providing an excerpt.
The idea of a physical multiverse came later to physics than it did to religion and philosophy. The Hindu religion has ancient concepts that are similar. The term itself was, apparently, first applied by a psychologist, rather than a physicist.
Concepts of a multiverse are evident in the cyclical infinite worlds of ancient Hindu cosmology. In this viewpoint, our world is one of an infinite number of distinct worlds, each governed by its own gods on their own cycles of creation and destruction.
The word multiverse was originated by American psychologist William James in 1895 (the word “moral” is excluded from some citations of this passage):
“Visible nature is all plasticity and indifference, a [moral] multiverse, as one might call it, and not a [moral] universe.”
The phrase rose in prominence throughout the 20th century, when it was used regularly in science fiction and fantasy, notably in the work of author Michael Moorcock (though some sources attribute the word to the earlier work of author and philosopher John Cowper Powys in the 1950s). It is now a common phrase within these genres.
According to MIT cosmologist Max Tegmark, there are four levels of parallel universes:
Level 1: An infinite universe that, by the laws of probability, must contain another copy of Earth somewhere
Level 2: Other distant regions of space with different physical parameters, but the same basic laws
Level 3: Other universes where each possibility that can exist does exist, as described by the many worlds interpretation (MWI) of quantum physics
Level 4: Entirely distinct universes that may not even be connected to ours in any meaningful way and very likely have entirely different fundamental physical laws
Tegmark’s approach is one of the few attempts to comprehensively categorize the concepts of parallel universes in a scientific (or, as some see it, pseudoscientific) context. The full text of Tegmark’s 2003 paper on this topic is available at his MIT website, for those who don’t believe that these concepts are scientific. (They may not be scientific, but at least they’re unscientific musings by a scientist.)
- An infinite multiverse: a bad idea or inescapable? (disinfo.com)
- Vishnu Once in 6480 Years Astronomy Precession Equinoxes (ramanan50.wordpress.com)
- Aliens Ramayana Mahabharata Hinduism (ramanan50.wordpress.com)
- Hinduism 14 Lokas Quantum Mutiverse Study (ramanan50.wordpress.com)