What was the surface and atmosphere of the early earth like?

Question

please explain me and present alternative hypotheses if they exist.

Answer 1

Once the Earth had stabilized enough to form an atmosphere, it possessed one dramatically different than what we have today. The earliest atmosphere was comprised mostly of CO2, methane, ammonia, and water vapor. This chemical soup was not conducive to life as we know it. Eventually, cyanobacteria, possibly imported by debris from Martian asteroid impact events, brought primitive CO2-consuming bacterial to the proto-oceans of the young Earth. These tiny life forms converted most fo the CO2 into oxygen, which reacted with the ammonia gasses to release nitrogen, which now makes up 70% of the atmosphere of the Earth.

One of the reasons scientists are so interested in the Saturnian moon Titan is its atmosphere - it is very similar to the early Earth. Since Titan is so far from the energy of the Sun, the photo-chemical processes and possible introduction of external life forms from neighboring planets has left Titan in a primordial state. There are some alternative theories about early atmospheric composition, but these older ideas have been mostly discounted due to new knowledge gathered by the Voyager and Cassini/Huygens space probes, and other research carried out at many universities around the world.

Answer 2

the outdoors replaced into gently rolling hills,with widespread length timber in massive forests. different aspects have been grasslands,with alluring eco-friendly grass shimmering in a gentle breeze. Then got here the tremendous flood that led to tremendous mountain tiers,and led to the water to pass to the backside places.The earth nonetheless has alluring places,yet will perpetually shop the grotesque scars left to remind men of the flood of Noah.

Answer 3

Hi. VERY early Earth had vacuum, then out-gassing and comet impacts gave us nitrogen and water. The rest is history.

Answer 4

clean