Mars Earth's Sister Planet ?
November 12th 2008 02:16
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Is Mars Earth’s sister planet? While its true both planets share similarities. Spacecraft have found striking similarities between Earth and Mars. The two planets have a magnetic field, continental tectonic drift; Mars has season’s ice caps and water. Mars has a hot internal core just like Earth. Mars is more like Earth than any of the other planets in our solar system although there are some big differences (although Venus has about the same mass as Earth).
Mars is about half the size of Earth and only about 1/10th its weight. Mars’ atmosphere is less dense than ours and the temperature difference are more extreme. Mars also has volcanoes and mountains, mount Olympic Mons is more than 16 miles (26 km) high and is over 375 miles (600 km) across. That's at least 3 times bigger than Mount Everest. There evidence to suggest that Mars had oceans. The bulk of the Maritain oceans are now gone what little water mars has is now located in its Polar regions with some locked under the surface perhaps as permafrost.
So what happened?
Our planet is fortunate to be just about far enough from our Sun. Earth has a Large Moon that keeps earth’s axis from wobbling back and forth. Earth’s tilt gives us our seasons. Our Moon keeps our climate stable. Just like a child’s spinning top the Moon is Earth’s gyroscope that stops wild fluctuations in Earth’s axis. The Moon has stabilized our oceans and stopped them from being distributed to our polar regions.
Mars unlike Earth does not have a substantial Moon it has two moons but these are no more than asteroids and have very little influence on Mars. Over millions of years. Mars has wobbled drastically on its axis over time its axis swing back and forth the planet undergoing massive climatic changes. Because of this obliquity change, the ice that is now at the Martian poles would sometimes drift to the equator. Mars may have been a primitive Earth at one time in the past. Over millions of years Mars lost their ocean partly because of weaker gravitational influence and is lack of an “Earth” size.
Did life evolve on Mars?
I believe that Mars did support life at one time it may still have living bacteria and if it did have a moon like ours life may have evolved differently on Mars. The same can be said about our existence and evolution without our moon life on Earth as we know it would be vastly different than it is today. we humans may be the "aliens" here on Earth!!.
Earth with Moon taken by the Galileo spacecraft
Mars is about half the size of Earth and only about 1/10th its weight. Mars’ atmosphere is less dense than ours and the temperature difference are more extreme. Mars also has volcanoes and mountains, mount Olympic Mons is more than 16 miles (26 km) high and is over 375 miles (600 km) across. That's at least 3 times bigger than Mount Everest. There evidence to suggest that Mars had oceans. The bulk of the Maritain oceans are now gone what little water mars has is now located in its Polar regions with some locked under the surface perhaps as permafrost.
So what happened?
Our planet is fortunate to be just about far enough from our Sun. Earth has a Large Moon that keeps earth’s axis from wobbling back and forth. Earth’s tilt gives us our seasons. Our Moon keeps our climate stable. Just like a child’s spinning top the Moon is Earth’s gyroscope that stops wild fluctuations in Earth’s axis. The Moon has stabilized our oceans and stopped them from being distributed to our polar regions.
This is a composit image of the Valles Marineris hemisphere on Mars. The Valles Marineris is a large canyon system. (Courtesy of USGS)
Did life evolve on Mars?
I believe that Mars did support life at one time it may still have living bacteria and if it did have a moon like ours life may have evolved differently on Mars. The same can be said about our existence and evolution without our moon life on Earth as we know it would be vastly different than it is today. we humans may be the "aliens" here on Earth!!.
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Comment by S.L.
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Comment by CarlCan
Astroearth
Camera Sense
Interesting point.
Our species may have come from other worlds perhaps even Mars. Who knows there may be evidence that we had human counterparts on mars that have long since vanished. It would be interesting if future mars missions returned skeletal specimens back to earth.
Comment by Wilson Pon
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But, I'm sure about one thing here that human beings is having a plan to turn this red planet into the "Second Earth" in future...
Comment by CarlCan
Astroearth
Camera Sense
Although the conditions on Mars are not ideal, liviing on Mars would be pretty tough.