Mars tail

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alokmohan

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Mars has a tail like comet .This is quite new.Atmosphere and life escaped throgh tail.Thats why NASA did not get life.
 
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centsworth_II

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He's probably referring to the information in this release: <br /><br /><i>"Data accumulated by the ASPERA-3 instrument on board the European Space Agency's Mars Express spacecraft seems to indicate how Mars got so dry. Scientists believe that water used to cover Mars, but over the course of 3.8 billion years, it was stripped away from the planet by the Sun's solar wind. ASPERA-3 tracks the inflow of particles from the solar wind, and then tracks the outflow of particles escaping from the Martian atmosphere. It found that the solar wind penetrates deeply into the atmosphere to an altitude of 270 km, energizes particles, and causes about 1 kg (2.2 pounds) of material to trail away from Mars every second."</i><br /><br />This may help explain why Mars currently has a thin atmosphere and no surface water, but it does not say that Mars never had or does not now have life. <div class="Discussion_UserSignature"> </div>
 
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CalliArcale

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Strictly speaking, all planets have tails -- they're just extremely diffuse (as Mars' is). Even the Moon has a tail. It's material being blown away by the solar wind.<br /><br />The Earth's ionosphere is not spherical at all -- it is blown into a long tail (called the magnetotail) stretching out beyond the orbit of the Moon! But it is much shallower on the sunward side of Earth. The Sun blows material away, basically. If we didn't have a magnetosphere to redirect the solar wind, there would probably be a lot less air on Earth, and consequently no liquid surface water. <div class="Discussion_UserSignature"> <p> </p><p><font color="#666699"><em>"People assume that time is a strict progression of cause to effect, but actually from a non-linear, non-subjective viewpoint it's more like a big ball of wibbly wobbly . . . timey wimey . . . stuff."</em>  -- The Tenth Doctor, "Blink"</font></p> </div>
 
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