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Alexander Oparin
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Alexander Ivanovich Oparin was a Soviet biochemist notable for his theories about the origin of life and for his book The Origin of Life.
Oparin in the mid-1970s
Oparin in the mid-1970s
Abiogenesis
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Abiogenesis or the origin of life is the natural process by which life arises from non-living matter, such as simple organic compounds. The prevailing scientific hypothesis is that the transition from
Alexander Oparin
…Oparin (Russian: Александр Иванович Опарин; 2 March [O.S. 18 February] 1894 – 21 April 1980) was a Soviet biochemist notable for his theories about the origin of life and for his book The Origin of Life. He also studied the biochemistry of material processing by plants and enzyme reactions in plant cells. He showed…
If banded iron formation rocks of Archaean age (like these from Australia) are fossilized stromatolites, they would be among the earliest life-forms.
If banded iron formation rocks of Archaean age (like these from Australia) are fossilized stromatolites, they would be among the earliest life-forms.
Modern stromatolites in Shark Bay, created by photosynthetic cyanobacteria
Modern stromatolites in Shark Bay, created by photosynthetic cyanobacteria
The Cat's Paw Nebula is inside the Milky Way Galaxy, in the constellation Scorpius. Green areas show regions where radiation from hot stars collided w
The Cat's Paw Nebula is inside the Milky Way Galaxy, in the constellation Scorpius. Green areas show regions where radiation from hot stars collided with large molecules and small dust grains called "polycyclic aromatic hydrocarbons" (PAHs), causing them to fluoresce. Spitzer Space Telescope, 2018.
The earliest known life forms may be putative fossilized microorganisms, found in white smoker hydrothermal vent precipitates. They may have lived as
The earliest known life forms may be putative fossilized microorganisms, found in white smoker hydrothermal vent precipitates. They may have lived as early as 4.28 Gya (billion years ago), relatively soon after the formation of the oceans 4.41 Gya, not long after the formation of the Earth 4.54 Gya.