What are specific astromical factors resposible for the evolution of life on earth?

Question

what is significance of jupiter and moon, earth lcoation in galaxy...

Answer 1

For life as we know it to have evolved, the two biggest requirements are time and liquid water. The life span of a star depends on its mass. If the sun were more massive, it would burn hotter and faster. Not only would it flare out in millions of years (not billions) but it would produce more ionizing radiation that would damage organic molecules. The earth receives enough energy from the sun for liquid water to exist.

Jupiter helps by sweeping clean the solar system. Remember comet Shoemaker-Levy? The moon, while much less massive than Jupiter, is much closer. Every crater on the moon is one less that could have struck the earth.

The tides generated by the moon could have pushed the development of amphibians and eventually terrestrial life. The moon also helps by stabilizing the rotation of the earth.

The solar system is in a not too crowed part of the galaxy. If it were closer to the center of the galaxy, the radiation from the core would sterilize the planet. Also, we aren't in a globular cluster where frequent, close interactions with other stars would disrupt planetary orbits. Being in the plane of the galaxy is beneficial because the galactic magnetic field protects the earth from extra-galactic radiation.

The orbit of the solar system around the galaxy is oblique. Sometimes the sun is above the galactic plane and other times it is below the galactic plane. The episodes of periodic mass extinctions seem to be correlated with the times when the sun is above the galactic plane facing the Virgo supercluster. During these periods, the earth would be without the protection of the galactic magnetic field and subject to higher radiation exposure.

Answer 2

The earth is the right distance from the sun so that liquid water can exist on the surface of the planet. Earth also has a magnetic field which protects the atmosphere and the surface from much of the solar radiation. The moon causes tides which may have had some influence on evolution of life in the sea. I doubt that Jupiter had much effect since it is so far away from earth.

good luck

Answer 3

The moon was created by something hitting the earth and creating the moon, without the moon wwe would not have the polar axis at then 23.6 degrees that it is now, that created the climate and tidal patterns that we have now. Even though these change all the time it would be very hard to find the right conditions for life without the temperatures we have now, and as far as jupiter, it has served as a giant meteor magnent because of its immense gravity. it keeps all of the metoeors/comets thatv are entering the inner solar system from comming into proxmity with earth. there are many other factors but i gotta go home later :)

Answer 4

No such thing as evolution. Our atmosphere and distance from the sun (temp) are what has allowed the life that is on Earth to thrive.