tempretures on mercury

[gorganthium]

If it is 600 dregrees on the sunny side of mercury and -150 dregrees on the dark side of mercury is there a tremprate zone somewhere inbetween theses two different tempretures.Could there be a number of different temprate zones and how wide are theses zones.Do the tempretures in the temprate zones fluxuwait when there is sun spot or sun flare activity.

 

[gorganthium]

Because of the high tempretures on mercury is it not possible that the shinny spot seen on murcury is in fact some form of molten metal like silver,tin,lead or even gold.The constant tempreture keeps the metal molten like a lake of molten metal.It is possible the metal came from the asteroid impact many years ago.Another theorie suggest that the asteroid impact disturbed the surface to reveal the metal lying under the surface which could be pure silver ,tin,lead or gold.If this is the case ,then there must be a massive amout of that metal under the surface.

 

[3488]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">Because of the high tempretures on mercury is it not possible that the shinny spot seen on murcury is in fact some form of molten metal like silver,tin,lead or even gold.The constant tempreture keeps the metal molten like a lake of molten metal.It is possible the metal came from the asteroid impact many years ago.Another theorie suggest that the asteroid impact disturbed the surface to reveal the metal lying under the surface which could be pure silver ,tin,lead or gold.If this is the case ,then there must be a massive amout of that metal under the surface. <br />Posted by gorganthium</font></DIV></p><p><font size="2" color="#333300"><strong>Hi gorganthium,</strong></font></p><p><font size="2"><strong><font color="#333300">Welcome to SDC.</font></strong></font></p><p><font size="2"><strong><font color="#333300">The surface temperatures on Mercury are variable, the most extreme in the entire Solar System.</font></strong></font></p><p><font size="2"><strong><font color="#333300">The idea of molten metals on the surface unfortunately is untrue. That was a theory when it was thought that Mercury's rotation, was the same as it's orbital period around the Sun, i.e appox 88 days.</font></strong></font></p><p><font size="2"><strong><font color="#333300">There was thought to be a temperate zone due to the libration effect, caused by Mercury's elliptical orbit, causing the Sun to appear to bob up & down over the horizon, hence the temperate zone.</font><br /></strong></font><font size="2" color="#333300"><strong>&nbsp;</strong></font></p><p><font size="2" color="#333300"><strong>Alas that is now known to be false. Mercury rotates approx three times for every two orbits. For every one 88 day long orbit, Mercury will be facing the opposite way.</strong></font></p><p><strong><font size="2" color="#333300">At Dawn on the equator, the surface temperature is apporox -186 Celsius / 87 Kelvin. In the early afternoon, the surface temperature has soared to +427 Celsius / 700 Kelvin. At sunset, the temperature has dropped to a fairly pleasant +27 Celsius / 300 Kelvin, & then it falls away to approx -170 C / 103 K at midnight, slowly falling further to -186 C / 87 K again @ sunrise.</font></strong></p><p><strong><font size="2" color="#333300">It is thought that some craters in the polar regions may be shaded & therefore cold enough, perhaps below -200 C / 73 K, for ice to exist, though I am very doubtful.</font></strong></p><p><strong><font size="2" color="#333300">Another strange effect on Mercury, is that around Perihelion, its closest point to the Sun, the Sun appearas to 'backtrack', due to the Sun's apparent movement&nbsp;from east to west, is cancelled out by the Sun's apparent motion against the stars being quicker, thus for a short time the Sun appers to move from&nbsp; west to east. </font></strong></p><p><strong><font size="2" color="#333300">If you were on a part of Mercury at sunset at this&nbsp;point, the sun would appear to start rising again, then stop (as Mercury left perihelion), then continue setting!!!&nbsp;</font></strong></p><p><strong><font size="2" color="#333300">Mercury's surface generally is cratered, some areas more than others, lava plains dominate & there are hills, ridges & huge cliffs, scarps, thought to have formed when Mercury's large iron core started to cool, shrinking as it does so, causing the crust above to crack & crumple.</font></strong></p><p><strong><font size="2" color="#333300">Andrew Brown.</font></strong></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>

 

[weeman]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>If it is 600 dregrees on the sunny side of mercury and -150 dregrees on the dark side of mercury is there a tremprate zone somewhere inbetween theses two different tempretures.Could there be a number of different temprate zones and how wide are theses zones.Do the tempretures in the temprate zones fluxuwait when there is sun spot or sun flare activity. <br />Posted by gorganthium</DIV><br /><br />Well, during the day on Mercury it is hot, very hot!</p><p>And during the night it is cold, very cold! </p><p>That about sums it up </p> <div class="Discussion_UserSignature"> <p> </p><p><strong><font color="#ff0000">Techies: We do it in the dark. </font></strong></p><p><font color="#0000ff"><strong>"Put your hand on a stove for a minute and it seems like an hour. Sit with that special girl for an hour and it seems like a minute. That's relativity.</strong><strong>" -Albert Einstein </strong></font></p> </div>

 

[neilsox]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>If it is 600 dregrees on the sunny side of mercury and -150 dregrees on the dark side of mercury is there a tremprate zone somewhere inbetween theses two different tempretures.Could there be a number of different temprate zones and how wide are theses zones. Do the tempretures in the temperate zones fluxuwait when there is sun spot or sun flare activity. <br />Posted by gorganthium</DIV><br />The sunrise terminator flies over Earth's equator at a bit more than 1000 miles per hour. The sunsrise terminator of Mercury is much slower. Near the poles of Mercury; easy walking speed. So yes, there is a temperate zone just before sunrise, but the very thin atmosphere is mostly ions. The twilight zone is perhaps only a mile wide and the rocks are still cold from the long night, which is better than still hot from the long day at the sunset teminator.</p><p>Likely the bottom of crators near the North and South pole of Mercury never see sunlight, so they stay about&nbsp;-200 degrees c. &nbsp;A human habitat in a polar&nbsp;crator bottom&nbsp;would however warm the crator to a comfortable temperature due to waste heat.&nbsp;If not warm enough, a few convex mirors (just above the crator rim) could&nbsp;flood the crator bottom with weak sunlight. &nbsp; Neil</p>

 

[neilsox]

Ten meters below the surface at the bottom of a Mercury polar crator the rock temperature is likely about 100 degrees c, so air conditioning would be needed, if that is where the humans live for protection from the ions in Mercury's very thin atmosphere. Luckily dry rock is a poor heat conductor. Do you agree?&nbsp;&nbsp; Neil