Omega is the last letter of the Greek Alphabet. Hence the saying attributed to Jesus, I am “the Alpha and the Omega” i.,e. the beginning and the end.
The eschatological idea that time is linear and historical rather than cyclic, and that history is moving to a state of Divine Eternity on Earth goes back to Zoroastrianism, and from there, Hebrew and Early Christian Apocalyptic literature, and from there in turn to Messianic Kabbalah (Lurianic and Hassidic) with its concept of Tikkun Olam, or Repair of the Universe, and Eastern Christian idea of Apokatastasis ( restoration, universal salvation).
In the French Jesuit paleontologist Pierre Teilhard de Chardin‘s evolutionary theology, religious eschatology is combined with secular science. For Teilhard, the Earth evolves through abiotic stages, the biosphere, and the noosphere, with the latter culminating in the Omega Point. The Omega Point is the ultimate stage in the evolution of the Earth as a whole, in that everything is tending to an ultimate point of “unification in God consciousness .
Teilhard’s ideas were further developed and updated by physicist Frank Tipler in The Physics of Immortality. According to Tipler’s scientific-religious thesis, intelligent life eventually takes over all matter in the universe and eventually force its collapse (reversing the current accelerating expansion of the Universe) into a cosmological singularity, where the computational capacity of the universe becomes infinite (Omega Point), allowing the emulation of all beings who have ever lived (the Christian Resurrection of the Dead) (Wikipedia).
The Supermind, or Infinite Truth Consciousness (see diagram above) is the infinite unmanifest Absolute (the Vedantic sachchidananda, Being-Consciousness-Bliss) in dynamic manifestation, and thus the dynamic intermediary stage, in Platonic and Christian theology equivalent to the Logos, between the totally transcendent Godhead and the material evolution. It’s attained by ascending through and actualising in oneself a series of transitional stages, shown as the downward pointing triangle (the descent of the Divine Consciousness).
In science fiction, Arthur C Clarke’s Childhood’s End provides a similar if less eloquent take on this. But Stanley Kubrick improved on Clarke’s story with his integration of Childhood’s End and 2001, in what is perhaps the greatest science fiction movie of all time, 2001: A Space Odyssey.
The Transhumanist concept of the Technological Singularity provides another take on this, but without the eschatological, metaphysical elements of Aurobindo, Teilhard, and Kubrick
Perhaps because his main work, The Phenomenon of Man, was a best seller for a while, Teilhard’s Omega Point theology has had a small but still significant influence on science fiction, This was not the case with Sri Aurobindo, who is little known outside India, and whose voluminous output can be intimidating for the average reader, especially given his difficult 19th century style of writing . My own metaphysical worldview is however more strongly influenced by Aurobindo then by Teilhard, and this will be reflected in the general theme of the Alcioneverse.