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You may have heard it before: billions of years ago Mars probably looked more like Earth does now, with clouds and oceans and a much thicker atmosphere. It may even have had some type of microbes. But now it's a barren, frozen desert.
So what happened? Where did the air and water go?
NASA is launching a new spacecraft to try to find out. It's called MAVEN, which stands for Mars Atmosphere and Volatile Evolution. It's the first mission dedicated to studying the red planet's upper atmosphere.
It had its atmosphere sucked up and its surface water stolen by aliens that groom the planets every 6000 years.
earth is next after comet ison messes up our magnetosphere and excites the sun's particle emmitions making it easier for the extraction of our own ozone and water supply.
I read long ago a theory that Mars ejected it's core long ago, and the two moons around Mars, and the giant volcano on the surface are the proof. I would say that this latest determination by NASA backs up that theory. I will have to try and find that link, it was pretty fascinating.
My question is, is it supported mathematically?
Mons Olympus and Valles Marineris, to me, are signs that whatever happened to it was rather cataclysmic. Add to that the rocks strewen around like half the planet was blown apart, combined with the blueberries which are often accreted, and it just makes the "core cooled off" explanation seem silly
Maybe the Martians used up Mars natural resources, chopped down all of the trees, poisoned the oceans, hunted their animals to extinction, played God & abused nature.
The "cooling core" theory is just that, a theory, but it is the most widely accepted model.
Six thousand years ago, the solar system comprised only two terrestrial planets. A high energy (10^41 ergs) impact on Jupiter at that time initiated a 3000 year period of planetary chaos. A plasma cloud many times the size of Jupiter rebounded and rapidly contracted into the flaming proto-Venus. This new planet swept through the inner solar system and ejected what I call priori-Mars, the most ancient of the terrestrial planets, from its interior orbit into one that intersected that of the Earth. Priori-Mars had a solid iron core which was the source of its internal magnetic field and was a living planet with abundant vegetable and animal life, including intelligent life far beyond our own. Priori-Mars (as Yama-Yami in Hindu myth) was described as a 'green man with a red cloak,' indicating that it was covered with vegetation. This, combined with the duality inherent in this name and in the Chinese Yin-Yang figure, were all depictions of the two dichotomous regions of priori-Mars - the still vegetated southern hemisphere and the north polar region, which was covered with volcanos and lava. These correspond today with the southern highlands and the northern plains. Yama was said to have been protected by two vicious dogs, which were obviously its diminutive satellites, Phobos and Diemos.
Like the Earth, the planet Mars has an atmosphere, white clouds, polar caps and seasons.
Mars has a partially liquid core, probably containing molten iron and perhaps surrounding a solid iron core, as within the Earth.
Mars does not now have a global, dipolar magnetic field to deflect lethal cosmic rays and energetic solar particles.
The oldest terrain on Mars exhibits bands of magnetized material with alternating polarity, most likely originating about 4 billion years ago when the red planet might have had a global, dipolar magnetic field.
Layers in the polar caps of Mars suggest climate changes on time scales of 10 thousand to 100 thousand years, perhaps triggered by periodic variations in the planet’s orbit and rotation axis.
Mars is divided into two strikingly different hemispheres; in the south there are the older, elevated, heavily cratered highlands that resemble the lunar highlands. In the north there are the younger, lower-lying, smoother volcanic plains.
Towering volcanoes and immense canyons are found on Mars.
Our limited knowledge of the interior of Mars owes in part to a singular event that brought a new purpose to a floundering Mars research and exploration program. With Mars Pathfinder en route, the focus shifted from a frozen, dormant, volcanic planet to a potentially hydrologically active planet that may, at some point, have harbored life. This shift in emphasis resulted from the recognition of the carbonate-bearing, orthopyroxenite Allan Hills (ALH) 84001 (Fig. 3) as martian in 1994 (32) and subsequent suggestion in 1996 that it harbored evidence of ancient microbial life. This suggestion engaged and captured the public attention about planetary science in a way not seen since Apollo. Fifteen years later, carbonates, sulfates, water-ice, and other water-borne deposits have been discovered on the planet’s surface, redefining the hydrologic and geologic history of Mars.