Difference between revisions of "March 12, 2004"

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=Forming the Moon=
 
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<table width="640"  border="0" align="center" cellpadding="6" cellspacing="2">
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      <td width="50%"><h2 align="left">Forming the Moon</h2></td>
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  <td width="50%"><h2 align="right">March 12, 2004</h2></td>
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<table width="85%"  border="0" align="center" cellpadding="6" cellspacing="2">
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      <td colspan="2"><div align="center">
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<IMG SRC="images/LPOD-2004-03-12.jpeg" NAME="main_image" width="447" height="399" border="0"></div>
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      <td><div align="center" span class="main_sm">Image Credit:  [mailto:hartmann@psi.edu Bill Hartmann]</div></td>
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<table class="story" border="0" bgcolor="#FFFFFF" width="90%" cellpadding="10" align="center"><tr><td>
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  <p class="story" align="center"><b>Forming the Moon </b></p>
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  <p class="story" align="left">
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          Bill Hartmann isn't really that old, but from his paintings of the formation of the Moon you might think he
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        witnessed the event 4.5 billion years ago. As a leading planetary scientist and a skilled artist, Hartmann uses
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        painting to visualize scientific understanding and hypotheses. These four paintings illustrative conceptual stages
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        in the birthing of our Moon. The upper left shows the moment of impact as a Mars-size planetesimal smashed into
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        the early Earth. One half hour later (upper right) the planetesimal is consumed and shock waves race thru the
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        Earth. Five hours after impact, silicate vapors from the Earth and the impactor are still being sprayed into
 +
        space from the impact site (bottom left). Sometime later, some of the condensed silicates that created a ring
 +
        around the Earth has accreted to form a moon, our Moon, which is still molten from the energy of millions of
 +
        collisions. The remaining ring particles will be sucked up by the Moon, re-enter Earth's turbulent atmosphere, or
 +
        be ejected out of Earth's orbit. Now does the early period of intense cratering and total melting of the Moon
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        make sense?
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  </p>
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  <p><b>Technical Details:</b><br>
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CAW mosaicked these four images, each copyrighted by Bill Hartmann, together. Some of Bill's
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paintings are based on computer modeling, but for the first one he says, <I>I was using my internal
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carbon computer instead of silicon, and just designed it in the 70s, based on instinct of what it
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would look like</I>. To purchase a painting contact Bill at his email address hartmann@psi.edu  </p>
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  <p class"story"><b>Related Links:</b><br>
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                [http://www.psi.edu/hartmann/index.html Bill Hartmann]<br>
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[http://www.psi.edu/projects/moon/moon.html The Origin of the Moon]</p>
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  <p class"story"> <b>Tomorrow's LPOD:</b> First Light on a Nearly Full Moon</p>
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  <p><img src="../../../MainPage/spacer.gif" width="640" height="1"></p>
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  <p align="center" class="main_titles"><b>Author & Editor:</b><br>
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      [mailto:chuck@observingthesky.org Charles A. Wood]</p>
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      <p align="center" class="main_titles"><b>Technical Consultant:</b><br>
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      [mailto:anthony@perseus.gr Anthony Ayiomamitis]</p>
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      <p align="center" class="main_titles"><b>[mailto:webmaster@entropysponge.com Contact Webmaster]</b></p>
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      <p align="center" class="main_titles"><b>A service of:</b><br>
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      <a class="one" href="http://www.observingthesky.org/">ObservingTheSky.Org</a></p>
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      <p align="center" class="main_titles"><b>Visit these other PODs:</b> <br>
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      <a class="one" href="http://antwrp.gsfc.nasa.gov/apod/astropix.html">Astronomy</a> | <a class="one" href="http://www.msss.com/">Mars</a> | <a class="one" href="http://epod.usra.edu/">Earth</a></p></td>
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<p>&nbsp;</p>
  
  

Revision as of 15:36, 4 January 2015

Forming the Moon

Forming the Moon

March 12, 2004
<IMG SRC="images/LPOD-2004-03-12.jpeg" NAME="main_image" width="447" height="399" border="0">
Image Credit: Bill Hartmann

Forming the Moon

Bill Hartmann isn't really that old, but from his paintings of the formation of the Moon you might think he witnessed the event 4.5 billion years ago. As a leading planetary scientist and a skilled artist, Hartmann uses painting to visualize scientific understanding and hypotheses. These four paintings illustrative conceptual stages in the birthing of our Moon. The upper left shows the moment of impact as a Mars-size planetesimal smashed into the early Earth. One half hour later (upper right) the planetesimal is consumed and shock waves race thru the Earth. Five hours after impact, silicate vapors from the Earth and the impactor are still being sprayed into space from the impact site (bottom left). Sometime later, some of the condensed silicates that created a ring around the Earth has accreted to form a moon, our Moon, which is still molten from the energy of millions of collisions. The remaining ring particles will be sucked up by the Moon, re-enter Earth's turbulent atmosphere, or be ejected out of Earth's orbit. Now does the early period of intense cratering and total melting of the Moon make sense?

Technical Details:
CAW mosaicked these four images, each copyrighted by Bill Hartmann, together. Some of Bill's paintings are based on computer modeling, but for the first one he says, I was using my internal carbon computer instead of silicon, and just designed it in the 70s, based on instinct of what it would look like. To purchase a painting contact Bill at his email address hartmann@psi.edu

Related Links:
Bill Hartmann
The Origin of the Moon

Tomorrow's LPOD: First Light on a Nearly Full Moon

<img src="../../../MainPage/spacer.gif" width="640" height="1">

Author & Editor:
Charles A. Wood

Technical Consultant:
Anthony Ayiomamitis

Contact Webmaster

A service of:
<a class="one" href="http://www.observingthesky.org/">ObservingTheSky.Org</a>

Visit these other PODs:
<a class="one" href="http://antwrp.gsfc.nasa.gov/apod/astropix.html">Astronomy</a> | <a class="one" href="http://www.msss.com/">Mars</a> | <a class="one" href="http://epod.usra.edu/">Earth</a>


 


COMMENTS?

Click on this icon File:PostIcon.jpg at the upper right to post a comment.

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