why mars is unable to support life?

Answer 1

actually they now think there might be some life on mars but may be water/hydrogen peroxide based.

Answer 2

Scientific research so far suggests that Mars cannot sustain
life as known on Earth because Mars lacks characteristics that
allow for life on Earth

Characterisitics include the distance of the planet from
the nearest star. If the star is too close, the planet's climate
will be too hot. If the star is too far away, the planet's
climate will be too cold: neither instance will sustain life.

The planet's rotation rate must be moderate as well. If the rate
is too slow, then light and heat from the star will burn one
side of the planet while other side freezes.

Chemical composition is important because without the right
chemicals life cannot form.

Another significant reason for the life on earth is that the
Earth's rotation axis is remarkably stable. The moon stabilizes
the Earth.

Many planets have moons. Mars has a moon. But the Earth's moon is fairly unique.

The moon's size is more than one-sixth the size of the earth.
Earth is so stable because it has a uniquely large moon, which
is uncommon.

The moon is as necessary to life on Earth as the sun is known to
be.

Answer 3

It may be able to [support life].

Mars [below the poles] has an average temperature that ranges from 1° F, ( -17.2° C) to -178° F (-107° C). And while the Atmosphere is 100 times thinner than earths, it some insulating properties to keep temperatures within a limited range.

Mars also lacks free standing water [perhaps debatable] which many scientists believe is a key ingredient of life.

Answer 4

There are so many answers to this question,

There is a lot of debate as to whether Mars did support life, the general consensus is that it did, but a runaway greenhouse effect destroyed the ability of the planet to support life.

But now that we are finding ever more extraordinary organisms on earth we are redefining the parameters for life.

For example, it was thought that no organism could live in boiling water, but some where found in boiling spring at Yellowstone park.

It has also been found that organism thrive on Black smokers (hydrothermal vents) on the Ocean floor, turning Hydrogen Sulphide gas and heat into nutrients.

Mars also has many challenges for Organisms,

1. It has no ozone layer so any solar radiation hits the surface

2. It has massive temperature fluctuations

3. Poor availability of water, it is sub-surface and most probably in a solid state.

I hope this answers your question

Answer 5

There are so many answers to this question.

1.There was no enough oxygen to breath.

2.The climate of mars was too bad to live(the average temperature on Mars is about 218 K,(-55 C, -67 F))

3.Carbon dioxide is the major constituent of the atmosphere of mars.

Answer 6

That is not entirely true. It is not able to support human life or the forms of life that can be found on Earth. Some scientists claim that mars might be habitable by some microorganisms.
Anyway, we currently wouldn't be able to live there because there is no atmosphere and water. (Signs of presence of water in the past have been found but in present times no water is present on Mars).

Answer 7

the question is interesting because it assumes that all life must be able to live on earth.

It might be able to support life.

reasons it can't support human life include:

extreme cold

lack of known fresh water

thin and wrong type of atmosphere

no magnetic field

those are some of the reasons we can't live on the surface but that's a far cry from saying life can't exist there.

The evidence has begun to point towards life still existing on mars under the surface, see the article below

Answer 8

We do not know for certain that it cannot support some kind of life. Not too long ago we discovered bacteria living around undersea volcanic vents, thriving on incredible heat and pressure...and not even dependant on oxygen to survive. When we have not even fully discovered all there is to know about earth life, who is to say what is or was possible on Mars?

Answer 9

because of very less amount of oxygen and its cold atmosphere if you want to live on mars you will have to wait 5 years at first you will have to send machines to mars to let out some greenhouse gasses then it will get warm then introduce the most simplest form of plant life soon it will grow and release oxygen after 8 years it will become habitable

Answer 10

Mars could be a good "fall back" planet for us. Ever see the movie "Red Planet" starring Val Kilmer? Mars has it's possibilities.

Answer 11

Mars do not have layer of gas or cloud on it surface that are
big and deep enough to protect life from harmful rays from
the Sun