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The Origin and Nature of Life on Earth: The Emergence of the Fourth Geosphere (2016) is a book by Eric Smith and biophysicist Harold J. Morowitz which provides an introduction to origins of life research via a review of perspectives from a variety of fields active in this research area, including geochemistry, biochemistry, ecology, and microbiology.
The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...
Ray of Creation. The Ray of Creation is an esoteric cosmology which was taught by G. I. Gurdjieff as part of his Fourth Way teaching. It is a diagram which better represents the place which Earth occupies in the Universe.
All life on Earth can be traced back to a Last Universal Common Ancestor, or LUCA. A new study suggests that this organism likely lived on Earth only 400 million years after its formation.
This challenges the traditional view that life must arise solely from biomolecules, such as proteins and nucleic acids, and suggests that life's origins may be more complex and varied. The paper also addresses the " N = 1 problem [ 6 ] ," which refers to the limitation of basing all theories of life on a single example—life on Earth.
Page one of Aristotle's On the Heavens, from an edition published in 1837. On the Heavens (Greek: Περὶ οὐρανοῦ; Latin: De Caelo or De Caelo et Mundo) is Aristotle's chief cosmological treatise: written in 350 BCE, [1] it contains his astronomical theory and his ideas on the concrete workings of the terrestrial world.
Natural selection is tantamount to common descent in that long-term occurrence and selection pressures can lead to the diversity of life on earth as found today. All adaptations—documented and undocumented changes concerned—are caused by natural selection (and a few other minor processes).
Scientists have found a new Earth-like planet that could support alien life – just 40 light-years away.. The planet is a remarkable discovery in the search for habitable worlds: it is slightly ...