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Mars the fourth Planet
Atmospheric conditions on Mars or
Theory about the Life on Mars
Existance of Water on Mars
Mars as compared to Earth
Mars is the fourth planet from the Sun in the Solar System
Named after the Roman god of War ,Mars
The "Red Planet" as the Iron Oxide
prevalent on its surface gives it a
Mars is a terrestrial planet that
consists of minerals containing silicon
and oxygen, metals and other elements
that typically make up rock.
Mars has two relatively small natural
moons, Phobos and Deimos, which orbit close to
The motions of Phobos and Deimos appear very
different from that of our own moon. Phobos rises
in the west, sets in the east, and rises again in just
Despite the 30 hour orbit of Deimos, it takes 2.7
days to set in the west
Both have Circular Orbit
Mars is a terrestrial planet with a thin atmosphere,
having surface features such as , the volcanoes, valleys,
deserts, and Polar ice Caps.
Atmospheric pressure on the surface ranges from a low
of 30 Pa(0.030 kPa) to over 1,155 Pa (1.155 kPa) with a
mean pressure at the surface level of 600 Pa (0.60 kPa).
Methane has been detected in the Martian atmosphere
with a mole fraction of about 30 ppb.
The atmosphere of Mars consists of about 95% carbon
dioxide, 3% nitrogen, 1.6% argon and contains traces
of oxygen and water.[
In the early ages it was
supposed that the living thigs
are present and life exist on
But after the first Flyby this
fact was cleared that there is no
life on Mars.After that visit the
• The first successful flyby of Mars occurred in 1965,
by Mariner 4
• Mariner 4 dipped less than
10,000 km above the planet's
surface and took 22 pictures.
Mars was covered with desert
sand and ancient craters.
No cities. No canals.
No Martians. No one would
ever look at the red planet the
same way again.
Liquid water cannot exist on the surface of Mars due to
low atmospheric pressure
This forms only in the presence of acidic water, which
demonstrates that water once existed on Mars.
Early telescopic observations revealed that Mars has
permanent ice caps at both poles; they're visible even
with a small telescope. We now know that they're
composed of water ice and solid carbon dioxide ("dry
ice"). The ice caps exhibit a layered structure with
alternating layers of ice with varying concentrations
of dark dust.
As on Earth ,Mars also consists of minerals
containing silicon and oxygen, metals, and other elements
that typically make up rock.
Earth's crust, averaging 40 km, is only one third as thick as
Mars’ crust, relative to the sizes of the two planets.
Size of Mars is much smaller than Earth.
So according to the scientific research it is proved that
Mars is the planet after Moon in the Solar System
where human life can be possible .
But under specific conditions.it can be possible
because the traces of water and oxygen is present on