How geology tells the story of evolutionary bottlenecks and life on Earth
Phys.org » Astrobiology Magazine
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1y ago
Evidence that catastrophic geological events could have created evolutionary bottlenecks that changed the course of life on Earth may be buried within ancient rocks beneath our feet ..read more
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How life could help atmospheric tides slow a planet's rotation
Phys.org » Astrobiology Magazine
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1y ago
Resonating oscillations of a planet's atmosphere caused by gravitational tides and heating from its star could prevent a planet's rotation from steadily slowing over time, according to new research by Caleb Scharf, who is ..read more
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Sharing life with the planets next door
Phys.org » Astrobiology Magazine
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1y ago
How life could be shared between planets in close proximity to one another has received a greater insight thanks to new analytics based on previously known and new calculations. The findings are allowing researchers to understand ..read more
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Cleaning up the clutter: How proto-biology arose from the prebiotic clutter
Phys.org » Astrobiology Magazine
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1y ago
Just like the mythical creation stories that depict the formation of the world as the story of order from chaos, the early Earth was home to a chaotic clutter of organic molecules from which, somehow, more complex biological ..read more
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Computing the origin of life
Phys.org » Astrobiology Magazine
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1y ago
As a principal investigator in the NASA Ames Exobiology Branch, Andrew Pohorille is searching for the origin of life on Earth, yet you won't find him out in the field collecting samples or in a laboratory conducting experiments ..read more
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The habitability of Titan and its ocean
Phys.org » Astrobiology Magazine
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1y ago
Saturn's largest moon, Titan, is a hotbed of organic molecules, harboring a soup of complex hydrocarbons similar to that thought to have existed over four billion years ago on the primordial Earth. Titan's surface, however ..read more
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How sulfur helped make Earth habitable before the rise of oxygen
Phys.org » Astrobiology Magazine
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1y ago
Mapping the bonds and vibrational modes of molecules containing sulfur isotopes is helping to shed light on the chemical reactions that took place in Earth's atmosphere during the Archean era, before the atmosphere became ..read more
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Alternative Earths: Characterizing the Earth during different stages of its 4.5-billion-year existence
Phys.org » Astrobiology Magazine
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1y ago
Three billion years ago, Earth was a very different place. The sun that shone on its oceans and continents was not as bright as it is today, and rather than the oxygen-rich atmosphere humans need to survive, methane played ..read more
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How animals sense Earth's magnetic field
Phys.org » Astrobiology Magazine
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1y ago
The secrets behind magnetoreception—that is, the ability of some animals to sense Earth's magnetic field—are beginning to gradually unravel, thanks in part to a new study that demonstrates magnetic sensitivity in a completely ..read more
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Six things to know about NASA's Ingenuity Mars helicopter
Phys.org » Astrobiology Magazine
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1y ago
When NASA's Mars 2020 Perseverance rover launches from Cape Canaveral Air Force Station in Florida later this summer, an innovative experiment will ride along: the Ingenuity Mars Helicopter. Ingenuity may weigh only about ..read more
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