was mars once like earth?

Answer 1

NASA scientists have discovered additional evidence that Mars once underwent plate tectonics, slow movement of the planet's crust, like the present-day Earth. A new map of Mars' magnetic field made by the Mars Global Surveyor spacecraft reveals a world whose history was shaped by great crustal plates being pulled apart or smashed together.

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Answer 2

The theory goes that Mars once could have harbored life as it had an atmosphere and water (this is obvious on detailed pictures of Mars where one can see valleys and erosion)

Mars once had a liquid core, just like Earth has, which is the seat of magnetism, necessary to protect us from the dangers alpha and gamma rays of the Sun. Additionally, the Sun was burning 25% stronger when the solar system was still young than now, that made Mars a warmer planet.

Later when it started to cool down, the liquid core became solid, the atmosphere either crystallized or evaporated into space. Mars still has an atmosphere but a thin one.

If we speak about life on Mars, we don't mean Martian with space ships or something like that. More likely, there was bacterial life and very simple multi cellular beings. Some of these species may still be there but nothing to get really exited about.

Don't forget that bacteria also ruled Earth for more than a billion years as the only species around. In some way they still do, it is their planet and they will be here when the Sun explodes in 5 billion years.

Answer 3

no, the gravity there is alot less, and no life exist there like earth

Answer 4

nobody can state it for sure, close investigations are needed

Answer 5

no. it will be like earth....
i saw on discovery that bacterias had produced there underground...

Answer 6

Dont think so

Answer 7

not exactly but close