Definition of a planet?
A planet is a celestial body that is orbited by one or more natural satellites. Most planets are assumed to have formed from the condensation of hydrogen and helium gas into a central mass. This process of capture of orbiting material, called accretion, tends to occur in proto-planetary disks orbiting nearby stars.
A planet’s gravitational force does not always dominate over smaller objects nearby. The most common human-comprehensible example of this effect is the tides raised by the Moon on the Earth.
A planet can also refer to any large system consisting of many smaller bodies co-orbiting around a star, as seen in binary star systems, such as Sirius or Cygnus X-1. In certain star systems, such as the system of planets in our Solar System, a planet can be so large that it is gravitationally indistinguishable from a star. Thus there is no clear distinction between a planet and a star in these cases.
There are two broad classes of planets: terrestrial planets and celestial bodies that orbit a star other than the Sun. Examples of terrestrial planets are Mercury, Venus, Earth and Mars. Examples of non-terrestrial (cerebral) planets are dwarf planets, which orbit within the asteroid belt and other planetary-mass objects that orbit relatively near to either Neptune or the Sun (i.e., trans-Neptunian objects).
What do you know about MARS?
MARS is the fourth planet from the Sun and the second-smallest planet in our solar system. It orbits at a distance of about 227 million km from the centre of our solar system, taking 687 Earth days to orbit the Sun.
MARS’ atmosphere is very thin and is composed mainly of carbon dioxide with a small amount of nitrogen. The temperature at the surface ranges from -153 °C to 24 °C. It has two moons—Phobos and Deimos—and receives many meteorites that plunge into its surface. Its surface features include volcanoes, valleys, polar ice caps, shield areas, and impact craters made when celestial objects collided with its surface.
MARS has been studied by the Hubble Space Telescope. It was discovered in 1877 by Johann Franz Schmidt and Wilhelm Moritz von Eimern at the Berlin Observatory.
So what am I going to learn about?
MARS is very dry and cold, with a thin atmosphere consisting mostly of carbon dioxide ice. The two moons, Phobos and Deimos, are small with diameters of only about 11 km (7 mi). The surface features include dune fields and craters which formed when celestial objects hit Mars’ surface. Other features of interest include volcanic activity and runoff channels caused by the Martian hydro logical cycle.
Is MARS suitable for human habitation?
Mars is the second smallest planet in our solar system. It measures about 4,200 km (2,600 miles) across. The planet’s surface is a barren wasteland of rock and ice—a frozen desert. The temperature reaches a maximum of about 20°C (68°F; 77 K) on the equator during summer.
Atmosphere is very thin and composed mainly of carbon dioxide with a small amount of nitrogen. It has winds that can reach 225 km/h (140 mph), exhaling huge clouds of dust from locations called dust devils. At times, winds can blow as fast as 1,600 km/h (1,000 mph) and strip the atmosphere off entirely. Without this thin atmosphere, the temperature at the surface could reach a maximum of about –340 °C (-238°F; −210 K).
The planet has two small natural satellites, called Phobos and Deimos. The moons are dark grey rock-covered spheres that average about 7.5 km (25,000 ft) in diameter. Phobos orbits around Mars in a day in an elliptical orbit that takes about 6 hours and 24 minutes to complete one orbit. Deimos orbits Mars in about 1.26 days. Its orbit is almost circular.
What are Dust Devils?
A dust devil is a small, rotating column of air that picks up fine grains of sand, dirt, and even small rocks from the ground; it is also be made entirely of dust. These whirlwinds range in size from small to medium-size, depending on the wind speed and the amount of available loose material. If there is enough loose material on the surface, they can grow large enough to reach several hundreds of meters tall.
Is MARS suitable for terraforming?
No, since Mars is too close to the Sun (which could melt it) and has a small surface area, this would require massive amounts of time and resources. It would also be impossible to terraform this planet right now since there is no water on Mars. Also, if we terraformed Mars, it would never have an atmosphere again, which means there are no winds or atmosphere on Mars to help oxygenate the planet(it lacks water-vapour clouds). Terraforming Mars would be very difficult due to its constantly changing environment.
Can we use TerraGenesis to inhabit MARS?
No, since Mars has extremely low gravity and would require a lot of resources to keep it livable. We would need to give Mars 3 times more gravity than it does now. Also, because of the huge amount of work, it would require terraforming Mars to take thousands of years(due to its immense size:4,200km, nearly the size of the Earth). Terraforming is impossible right now because it lacks water vapour and clouds that keep it humid and provide water-vapour clouds. This would make colonizing Mars extremely difficult.
Is MARS suitable for mining?
No, since Mars has a very small radius (4,200 km or 2.600 miles), its surface area is very small, and there is not much of the planet to cover(Mars is only 2.6% the surface of Earth). It would be enormous work to mine, since Mars has very low gravity, about a third that of Earth.
With its harsh environment and few livable places, Mars is not a suitable planet for human habitation. Even if we could somehow survive there, the planet is much too small to provide us with a comfortable life. Also, the planet has no magnetic field and can be hit by solar radiation, which could mean that we would have to live underground to avoid exposure.