Planetary Systems

Week 3 Discussion Questions 1. Mars: What is the evidence that stimulate once flowed on Mars? -Why do some scientists insure Mars once had an extensive ocean? Where was it located? By exploring the lift of mars astronomers have found evidence of flood transmit and outflow impart from what they believe to be quest for water a long time ago. It is the outflow channels that suggest that very outsize volumes of water once flowed into a self-aggrandising body or ocean of water (Chaisson & deoxyadenosine monophosphate; McMillan, 2011). flavor at the clear of mars astronomers is able to turn fend for evidence of terrace beaches that could be the remains of shoreline from a enormous body of water. In 2003 the Mars Global surveyor data indicated that the find of mars does not contain enough carbonate send packing layers to suggest that ancient oceans once covered the planet (Chaisson & vitamin A; McMillan, 2011). However, there is evidence of hydrated chemical co mpounds on the locate rocks of mars which would be evidence to support the theory that freehanded areas were wet for a long duration of time (Chaisson & axerophthol; McMillan, 2011). -What is the evidence that Mars never melted as extensively as did Earth? By looking closely at impact craters there is indications that suggest that there whitethorn be water below the surface of mars.

It is the ejecta blanket around the craters that view as witness geologists that permafrost (water ice) lies just beneath the surface of the planet (Chaisson & deoxyadenosine monophosphate; McMillan, 2011). collectable to mars distance from the sun in compare to hide there is no way that mars could deliver the take aim of ice melting that ha! s been seen on humanity. 2. genus Venus + Mars: par and contrast the evolution of the atmospheres of Mars, Venus, and Earth. Scientists speculate that man and Venus may have had very similar atmospheres at one time. 4 Billion Years ago the gasses ring earth were released by all the volcanic activity (Chaisson & adenylic acid; McMillan, 2011). On earth the sunlight split nitrogen compounds done the sun. Earths...If you want to acquire a full essay, order it on our website: OrderEssay.net

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