Test 4: 12 A Flashcards
(15 cards)
the study of the probability of life existing beyond the biological edge of the Earth.
What is exobiology?
that studies the origins, early evolution, distribution, and future of life in the universe by investigating its deterministic conditions and contingent events.
What is astrobiology?
A priest and scholar who was burned at the stake by the Catholic church for advocating the plurality of worlds
Who was Giordano Bruno?
the emergence of life here on Earth is a rare, perhaps singular outcome, resulting from an improbable combination of astrophysical and geological events and circumstances.
What is the Rare Earth Hypothesis?
There may be simple life in our solar system
Is there non-earth simple/complex life in our solar system?
- a living organism is a self-replicating organism that grows by interacting metabolically with its environment in a spontaneous way.
- a self-contained chemical system maintaining a disequilibrium with its environment.
What is life?
4.2 billion years ago
When did life start on Earth
Food, water, and a temperature gradient
What are the minimum ingredients for life?
carbon, hydrogen and oxygen, with nitrogen, sulphur and phosphorus playing crucial supporting roles.
What primary elements are needed for life to occur and persist?
Yes it helped life start on earth
Did the moon help life on earth start?
if Drake’s Equation (and the Kepler Space Mission) are correct in strongly suggesting that sentient life should not be a rare occurrence in the Milky Way Galaxy, then how come we haven’t been graced by extraterrestrial visitors?
What is Fermi’s Paradox?
events in an advanced civilization that causes that civilization to collapse and disappear.
What is a Great Filter?
nanobots (very small machines) consume biomass (us) while exponentially replicating themselves to massive numbers thereby wiping out all life on Earth.
What is the Great Goo Hypothesis?
the natural process by which life arises from non-living matter, such as simple organic compounds.
What is Abiogenesis?
we residents of Earth are the genetic and evolutionary results of life (or parts of life) coming to Earth a long time ago, likely in a primitive form, on the backs of space rocks.
What is Panspermia?
