why we cannot live in other planets?

Answer 1

Depends. We can live on other planets and other places of the universe if we adapt. (i.e. we could build a moon base and live inside the moon base with air and sustaince)

This would be considered the "artificial" way of living on another planet.

But assuming you question was as to naturally living on a planet; what deters us from being able to live on most other planets "naturally" is because they don't satisfy living conditions needed for humans such as:

habitable atmosphere
sustaining gravity level
livable temperatures and weather
easy geology, soil compensation
sources of sustenance such as water/vegetation
magnetic field, dynamo

Okay each explained. As we live on earth with certain conditions any extreme can cause complications.

We need habitable atmosphere to breathe. Also it needs to be existing at some level to block out radiation from intense solar rays (if a star exists there).

Gravity level needs to be subjected to our existing body shape and form. If gravity was too intense our body would pull down that would form an evolution of us to become more flattened and shorter. We may adapt but it would definitely make it hurt while there. Atrophy is a key term here! Same goes for other way. We would end up being bouncing up and down if we were on a low gravity area.

Having temperatures in sync to our bodies ability to adapt is important. If we are able to sustain handling colder weather by warming up with jackets and heat sources maybe. But let's say it's a place of 500 degrees below zero. Then we end up putting a lot of source of energy to keep us comfortable. Weather is important too. If we lived on Jupiter (if we could live on gas surface) we would be continously bombarded by electrical and hurricane type weather. Or the chemical structure of atmosphere as first condition listed if it was a methane storm we would be undoubtedly dead.

Easy geology. Remember the movie "Armageddon"? The rocky terrain jutting up with sharp points of the asteroid would make it hard to traverse the area. Also from previous point the surface of the planet needs to be solid...Jupiter as a gas giant makes it hard to live on that. Soil composition is important in regards to sustaining life in soil for vegetation.

Which from that point any form of vegetation is important to our survival. We could build biodomes and such but if had to live using sources from the planet to help we would have to counteract any harmful levels (i.e. too much sulfur) to make it workable. Also water is the most important essential needed (outside of oxygen). Any way to form that materials on the planet or it should be existing already.

Finally magnetic field is important to help ionizing levels of radiation occuring from any solar activity. Having the dynamo which means planet with a central core of molten iron in a circumvent can help make the field.

There are numerous other conditions but these seem the obvious big ones.

Answer 2

If you will take a deeper look on all the planets the Earth is the only planet that has moderate temperatures compared to others.

We have the right amount of temperature , oxygen is enough , water is about 71% of earth , and the conditions are perfect for any animal or human to survive.

If we go 1 planet after Earth it will be very cold out there and the Gravity of the planet will be very enormous.
Plus the substances over here which are at room temperature you might find them in a solid state . Example instead of water you might find solid ice as the temperatures are very low...

If we move closer to sun the temperatures are so high that water cannot exist in a liquid state at room temperature. It evaporates. Even the revolution period of that Planet will be less than Earth means the change of seasons will be very fast.
The amount of oxygen exists or not is still not know.
Tests are conducted on Mars by trying to see if the plants survive or not over there.

In short Earth has the perfect amount of Rotation & Revolution period , & the right amount of metals & non metals & every thing that we need.
And most impoprtant the trees and the plants.

Answer 3

For survival the basic things that are required are the presence of Oxygen and water among other factors are the Gravity, Temperature, Terrain and vegetational cover
It is not possible for us to survive on other planets for us because even if water and air are present they are at their extreme conditions on some planets if water is present it is either boiling or almost frozen e.g. Titan ( A moon of Jupiter). In some cases the water and are present but the environment is not favourable due to extreme conditions of gravity.

Answer 4

Look up, look down, look all around! There is only one Earth made perfect by the Creator so humans could look at the other planets and marvel at this one. Knowing that we just can't stand still because of our thirst for knowledge, He also gave us a mind that will show us a way to explore other planets, but only by artificial man-made environments that we create to survive in. There is "no place like home".

Answer 5

Its not just oxygen in the atmosphere that makes a planet inhabitable, and real life is not like Star Trek reruns.

Our living planet has overlapping and co-dependent ecosystems. One instance is plants-they take the carbon dioxide we exhale, combine it with sunlight and produce the sugar they need to live and produce the oxygen we need to breathe as a by-product.

Plants rely on microbes and fungi to help them process nitrogen and other nutrients in the soil.

Even if we could find a planet with enough oxygen and no harmful gases like chlorine or sulfur, we would still need to "import"millions of interrelated life forms, get them living in unfamiliar conditions they are not adapted to, and wait for them to generate the kind of biosphere we need to be able to breathe, eat, drink etc.

That could take thousands of years, and the expense would be enormous.

Answer 6

Other planets do not have the same atmospheric conditions and liquid water. Also, other planets have already cooled down, meaning they no longer have an electromagnetic field. There are probably other reasons too.

Answer 7

no food no water no air ,extreme high or low temprature...coz some planets are so far from sun and others are so near beside the day on a planet may equal several years from that on earth... so u can be 80 years old and didn't complete a whole day on that planet

Answer 8

as far as we know... there is no planet beside our earth that supply what we need to live. Oxygen and H2O
Maybe there is.. but i think we must wait till our grand grand grand grand grand grand grand son discover it! xD

well thats mean...till that day come... lets save our earth from all that pollutant!

Answer 9

Wrong u are thinking all wrong. think of the earth as our space craft that is fully equipped . All the systems have been recycling things for 1000 of years.

Answer 10

Because we haven't found one yet that will support our life form but as long as we don't wipe ourselves out we still have a few billion years left to work it out. It might not happen straight away but it will happen.