[b]Close to the sun, Venus was once thought to harbor a tropical climate, some thinking it compatible with life. "Tropical" is hardly the word for a world so severe that it seems unlikely that astronauts will ever walk it. Mars's story is is much more dramatic. Fine lines seen from the earth once gave the impression of "canals" that suggested civilization. As spring comes on, dark areas change their size, some students of the planet suggesting that they even looked green. It seemed obvious that Martians(those that inhabit the Mars) built the canals to bring water from the polar caps to irrigate their crops. Newspaper publishers, seeing visions increased sales, told stories of what the Martians must look like. Flyby spacecraft in the 1960s showed the canals to be illusions, the seasonal variations in the dark markings caused by wind blown dust. Many more spacecraft followed, both to orbit the planet and to set down on its surface, none finding any evidence at all that anyone ever walked the Martian plane. [/b]

Let's go ahead to study the Peaceful Warrior: Mars

http://mars.jpl.nasa.gov/

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4. The atmospheric pressure is too low to allow liquid. However, while the planet is now dry, there is overwhelming evidence of once-running and standing water. The southern hemisphere contains dry tributary river system. In the northern hemisphere are vast "runoff channels" through which water catastrophically flooded, perhaps as a result of broken ice and massive volcanism. Liquid water requires a thick atmosphere, leading to the conclusion that Mars was once more like Earth, but lost it's atmosphere because of low gravity. While some of the water is now tied up at the poles, most of it may be below surface in the frozen ground.


5. The two Viking Landers, which settled to the ground of northern hemisphere, found a bleak boulder-littered, dusty terrain. The machines carried automated laboratories to search for signs of life. None were found. Great impacts have kicked rocks off the Martian surface into orbit round the Sun. A few later arrived here as meteorites, giving us a chance to take pieces of the planet into the lab. One seemed to contain "Microfosils", though most scientists argued that they were simply of geological origin. While there is no evidence for life on the planet, it cannot yet be excluded, giving us the drive for further, even human, exploration on this Earthlike World.

6. Moons are rare in the inner solar system, mercury and Venus have none, Earth has one as a result of accidental collision, and Mars has two tiny ones (Phobos and Deimos) that are most likely captured asteroids. Phobos, the larger of the pair, is but 25km across, and is so close to Mars that it's orbital period is less than the Martian day, and therefore it rises in the west and sets in the east.

Venus is a runaway oven with no water to speak of, while Mars is a runaway refrigerator with nothing but frozen "tundra.". Earth, large and in the middle, is "just right " for sustainable liquid water, which is why we are here. A little bit closer to the sun, or a bit farther away, and we would not be.

a planet has been launched again to the Red warrior, these and more is what the satellite is going to battle with as it makes it's research. we wish it a safe journey

Further reading, read
Astronomy: earth, sky, and planets by p,rof.James B.Kaler.

http://pds.jpl.nasa.gov/planets/

Seun, Lalasticlala, Ujsizzle, mkmyers45 please do the needful.
Cc: Jonnydon teempakguy freemana Explorer mathschic and co.

no matter Hw they try there is no life in mars becus God specifically created the earth for DAT purpose,they have almost destroy this beautiful earth wit der chemical waste nw DA are looking for were to run to.

Afonjas:




We have uncountable planets in the Universe so Earth and Mars are not the only planets we have

yes we have other planets BT the earth alone can only be inhabited