In the thought of Vladimir Vernadsky and Teilhard de Chardin, the noosphere (sometimes spelled noösphere) can be seen as the "sphere of human thought" being derived from the Greek νούς ("nous") meaning "mind" + σφαίρα (sfaira) meaning "sphere", in the style of "atmosphere" and "biosphere." In the original theory of Vernadsky, the noosphere is the third in a succession of phases of development of the Earth, after the geosphere (inanimate matter) and the biosphere (biological life). Just as the emergence of life fundamentally transformed the geosphere, the emergence of human cognition fundamentally transforms the biosphere. In contrast to the conceptions of the Gaia theorists, or the promoters of cyberspace, Vernadsky's noosphere emerges at the point where humankind, through the mastery of nuclear processes, begins to create resources through the transmutation of elements.
For Teilhard, the noosphere is best described as a sort of 'collective consciousness' of human-beings. It emerges from the interaction of human minds. The noosphere has grown in step with the organization of the human mass in relation to itself as it populates the earth. As mankind organizes itself in more complex social networks, the higher the noosphere will grow in awareness. This is an extension of Teilhard's Law of Complexity/Consciousness, the law describing the nature of evolution in the universe. Pierre Teilhard de Chardin, added that the noosphere is growing towards an even greater integration and unification, culminating in the Omega Point—which he saw as the goal of history.
The noosphere concept of 'unification' was elaborated in popular science fiction by Julian May in the Galactic Milieu Series. It is also the reason Teilhard is often called the patron saint of the Internet