Mar 24, 2020

At the dawn of the biosphere

Date: March 24, 2020 | 10:00 am – 11:00 am
Speaker: Stephen Mojzsis, University of Colorado
Location: Mondi Seminar Room 2, Central Building

Life will arise on planets given the availability of 4 key ingredients: organic raw materials, free energy from disequilibria, liquid water, and time; a caveat being that the first steps to biology (the Darwinism Threshold) were the most difficult. To understand these steps, we need to understand planets. To understand planets, we employ the physics and chemistry of the solid state a.k.a. geology and its tangible record from the oldest minerals, rocks and meteorites to follow complex histories. For example, the steps leading to an operative biome occurred at a time of frequent impacts by comets, left-overs of accretion, and asteroids. Such events strongly modified the surfaces of the inner planets at the time life took hold.
New physical, chemical and dynamical studies show that a biosphere could emerge and persist in the first ~150 million years of the solar system. I will show new approaches in Earth & Planetary studies to untangle the thermal history of the crustal template for life, and explore how the geosphere interacted with a primordial hydrosphere and atmosphere. Although we do not yet understand where, why or how life emerged on our world, we can now answer, when.

More Information:

Date:
March 24, 2020
10:00 am – 11:00 am

Speaker:
Stephen Mojzsis, University of Colorado

Location:
Mondi Seminar Room 2, Central Building

Contact:

GUGGENBICHLER Teresa

Email:
tguggenb@ist.ac.at

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