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	<title>Science Today &#187; lunar</title>
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		<title>LADEE</title>
		<link>http://www.calacademy.org/sciencetoday/ladee/5512103/</link>
		<comments>http://www.calacademy.org/sciencetoday/ladee/5512103/#comments</comments>
		<pubDate>Fri, 06 Sep 2013 17:11:31 +0000</pubDate>
		<dc:creator>molly</dc:creator>
				<category><![CDATA[Space]]></category>
		<category><![CDATA[Technology]]></category>
		<category><![CDATA[Top Story]]></category>
		<category><![CDATA[atmosphere]]></category>
		<category><![CDATA[dust]]></category>
		<category><![CDATA[LADEE]]></category>
		<category><![CDATA[lasers]]></category>
		<category><![CDATA[lunar]]></category>
		<category><![CDATA[moon]]></category>
		<category><![CDATA[nasa]]></category>

		<guid isPermaLink="false">http://www.calacademy.org/sciencetoday/?p=12103</guid>
		<description><![CDATA[While there is no officially acknowledged “man in the moon,” there is a LADEE...]]></description>
				<content:encoded><![CDATA[<p><span style="color: #888888;"><strong>By Josh Roberts</strong></span></p>
<p>While there is no officially acknowledged “<a href="http://en.wikipedia.org/wiki/Man_in_the_Moon">man in the moon</a>,” there is a LADEE (channel your inner Scot as you say it, “lad-ee”), or there will be soon. NASA’s upcoming <a href="http://www.nasa.gov/mission_pages/ladee/mission-overview/index.html#.Uiiw29LBOSo">Lunar Atmosphere and Dust Environment Explorer (LADEE)</a> is slated for launch today! This mission will give us a chance to revisit the lunar surface in great detail—and possibly determine the cause of some strange observations made decades ago during <a href="http://www.nasa.gov/mission_pages/apollo/">the Apollo missions</a>.</p>
<p>When taking coronal photographs in 1971, the <a href="http://en.wikipedia.org/wiki/Apollo_15">Apollo 15</a> astronauts found what they described as “excessive brightness” on the lunar surface. One objective of the <a href="http://www.nasa.gov/mission_pages/ladee/spacecraft/">LADEE</a> mission is to determine the nature of this glow, thought to be a loose lunar atmosphere. (If an atmosphere exists, it’s much, MUCH less dense than ours.) The glow could also be caused by electrostatically charged dust that hovers around the lunar surface.</p>
<p>In order to get to the Moon, LADEE will take off on a <a href="http://en.wikipedia.org/wiki/Minotaur_V">Minotaur V</a> launch vehicle, made from a converted peacekeeper missile—the first launch of its kind. It’s based on the Minotaur IV system, which has been used successfully many times.</p>
<p>After launch, LADEE will spend 30 days making its way to the Moon and establishing a stable orbit 156 kilometers above the surface; it will spend the next 30 days aligning, checking out, and tuning up its scientific instruments. The 100-day-long science portion of the mission will then allow NASA researchers to observe the lunar environment carefully and put to rest the 38-year-old mystery.</p>
<p>The <a href="http://www.nasa.gov/mission_pages/ladee/science/index.html#.UiitE9LBOSp">tools</a> onboard consist of an Ultraviolet and Visible Light Spectrometer (UVS), which will analyze chemical compounds and determine their elemental makeup; the Neutral Mass Spectrometer (NMS), which will help determine just how much atmosphere the moon has; and finally, the Lunar Dust Experiment (LDEX).</p>
<p>LADEE will also establish a higher bandwidth, more robust connection than any prior lunar mission, using <a href="http://esc.gsfc.nasa.gov/267/271.html">laser-based communication</a> instead of the traditional low-power radio-based system enabling more information to be sent faster. That’s right! NASA is deploying experimental space lasers to communicate with LADEE. How sci fi is that?</p>
<p>LADEE represents a synthesis of both new and well-tested technologies and a great chance for us to better understand our nearest neighbor in space.</p>
<p><span style="color: #888888;"><b>Josh Roberts </b><strong>is a program presenter and astronomer at the California Academy of Sciences. He also contributes content to Morrison Planetarium productions.</strong></span></p>
<p><em>Image: <em>NASA EDGE</em></em></p>
<img width="110" height="62" src="http://www.calacademy.org/sciencetoday/wp-content/uploads/2013/09/ladee_9.4.13_nasa_edge-110x62.jpg" class="attachment-110x62 wp-post-image" alt="NASA, LADEE, lunar, moon, dust, atmosphere" />]]></content:encoded>
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		<title>Neptune&#8217;s New Moon</title>
		<link>http://www.calacademy.org/sciencetoday/neptunes-new-moon/5511589/</link>
		<comments>http://www.calacademy.org/sciencetoday/neptunes-new-moon/5511589/#comments</comments>
		<pubDate>Wed, 17 Jul 2013 23:06:26 +0000</pubDate>
		<dc:creator>molly</dc:creator>
				<category><![CDATA[Space]]></category>
		<category><![CDATA[Top Story]]></category>
		<category><![CDATA[hubble]]></category>
		<category><![CDATA[lunar]]></category>
		<category><![CDATA[mark showalter]]></category>
		<category><![CDATA[moon]]></category>
		<category><![CDATA[moons]]></category>
		<category><![CDATA[neptune]]></category>
		<category><![CDATA[seti]]></category>
		<category><![CDATA[solar system]]></category>
		<category><![CDATA[Triton]]></category>

		<guid isPermaLink="false">http://www.calacademy.org/sciencetoday/?p=11589</guid>
		<description><![CDATA[We still have so much to learn about our closest planetary neighbors.]]></description>
				<content:encoded><![CDATA[<p><span style="color: #888888;"><strong>By Alyssa Keimach</strong></span></p>
<p><a href="http://www.seti.org/users/mshowalter">Mark Showalter</a> and his research team at the <a href="http://www.seti.org/">SETI Institute</a> in Mountain View, California, are on a roll. They’ve shown us yet again how much we have to learn about our closest planetary neighbors.</p>
<p>In 2011 and 2012, Showalter’s team discovered <a href="http://solarsystem.nasa.gov/planets/profile.cfm?Object=Pluto&amp;Display=Sats">two additional moons orbiting Pluto</a>. (The International Astronomical Union <a href="http://www.iau.org/public_press/news/detail/iau1303/">recently decided</a> on the names Kerberos and Styx for these moons, despite an overwhelming public vote to name one of them Vulcan.) Using the <a href="http://hubblesite.org/gallery/">Hubble Space Telescope</a>, the same researchers recently discovered a new moon orbiting Neptune.</p>
<p>“I got nice pictures of the arcs [segments of the planet’s rings], which was my main purpose, but I also got this little extra dot that I was not expecting to see,” says Showalter.</p>
<p>At 65,400 miles from Neptune, the speedy, newly-discovered moon completes an orbit every 23 hours. This moon is hard to track, but more than 150 archived images from Hubble between 2004 and 2009 enabled Showalter to track down the orbit of the new moon.</p>
<p>“The moons and arcs orbit very quickly, so we had to devise a way to follow their motion in order to bring out the details of the system,” he says. “It’s the same reason a sports photographer tracks a running athlete—the athlete stays in focus, but the background blurs.” (Showalter compares capturing the new moon to Eadweard James Muybridge’s famous racehorse photographs in a <a href="http://cosmicdiary.org/mshowalter/2013/07/15/how-to-photograph-a-racehorse-and-how-this-relates-to-a-tiny-moon-of-neptune/">blog post</a> earlier this week.)</p>
<p>This 12-mile wide moon is the smallest of the <a href="http://solarsystem.nasa.gov/planets/profile.cfm?Object=Neptune">Neptunian system</a> (which currently includes 14 moons), and revolves around Neptune between the orbits of Larissa and Proteus. For now the tiny dot is called S/2004 N 1. The official name may not be put to vote this time (but <i>Star Trek </i>fans can get cracking on ideas).</p>
<p>S/2004 N 1’s discovery brings up additional questions besides its new name. A mini moon like this should have had trouble forming in the neighborhood of much larger moons.</p>
<p>“How you can have a 20-kilometre object around Neptune is a little bit of a puzzle,” says Showalter. “It’s far enough away that its orbit is stable. Once you put it there it will stay there. The question is, how did it get there?”</p>
<p>Triton is Neptune’s biggest moon, orbiting in the direction opposite Neptune’s spin. Astronomers originally thought that a moon of this type would have to be captured by Neptune’s gravity, destroying all smaller moons in the process.</p>
<p>Stay tuned to learn S/2004 N 1’s new name, and perhaps new theories about how it originated in the first place!</p>
<p><span style="color: #888888;"><strong>Alyssa Keimach is an astronomy and astrophysics student at the University of Michigan and interns for the </strong><a href="http://www.calacademy.org/academy/exhibits/planetarium/"><span style="color: #888888;"><b>Morrison Planetarium</b></span></a><b>.</b></span></p>
<p><i>Image: NASA, ESA, M. Showalter</i></p>
<img width="110" height="62" src="http://www.calacademy.org/sciencetoday/wp-content/uploads/2013/07/Neptune_Moon_Credit_NASA_ESA_MShowalter_SETI-110x62.jpg" class="attachment-110x62 wp-post-image" alt="hubble, seti, mark showalter, neptune, moon, lunar, solar system" />]]></content:encoded>
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		<title>Interns at the AGU</title>
		<link>http://www.calacademy.org/sciencetoday/interns-at-the-agu/559579/</link>
		<comments>http://www.calacademy.org/sciencetoday/interns-at-the-agu/559579/#comments</comments>
		<pubDate>Fri, 14 Dec 2012 21:03:17 +0000</pubDate>
		<dc:creator>molly</dc:creator>
				<category><![CDATA[Academy Research]]></category>
		<category><![CDATA[Earth]]></category>
		<category><![CDATA[Space]]></category>
		<category><![CDATA[Top Story]]></category>
		<category><![CDATA[agu]]></category>
		<category><![CDATA[careers in science]]></category>
		<category><![CDATA[crabs]]></category>
		<category><![CDATA[interns]]></category>
		<category><![CDATA[internship]]></category>
		<category><![CDATA[lunar]]></category>
		<category><![CDATA[moon]]></category>
		<category><![CDATA[ocean beach]]></category>
		<category><![CDATA[sand crabs]]></category>
		<category><![CDATA[volcanoes]]></category>

		<guid isPermaLink="false">http://www.calacademy.org/sciencetoday/?p=9579</guid>
		<description><![CDATA[A group of high school interns at the Academy were among the scientists presenting at last week's AGU meeting.]]></description>
				<content:encoded><![CDATA[<p>At last week’s <a href="http://fallmeeting.agu.org/2012/">American Geophysical Union (AGU) Meeting</a> in San Francisco, thousands of international scientists presented their research on a variety of topics to their peers, the press, and the public.</p>
<p>The conference gave the same opportunity to younger scientists, through the AGU’s <a href="http://education.agu.org/diversity-programs/bright-stars/">Bright STaRS</a> program. “The program began in 2003 to get schools kids to the AGU meeting,” according to Pranoti Asher, manager of education for the AGU. She also reports that the number of middle and high school students attending has grown from 31 in 2003 to 128 this year.</p>
<p>Two teams from the Academy’s <a href="http://www.calacademy.org/join/interns_high_school/">Careers in Science (CiS)</a> intern program were among the Bright STaRS participants. The CiS program serves youth from communities traditionally underrepresented in the sciences with opportunities to immerse themselves in the natural world, develop life and job skills, receive college and career mentorship, and learn science and sustainability concepts in an authentic, paid work environment.</p>
<p>In a poster session that included 2,500 posters from professional and young scientists, CiS interns presented two very diverse posters—one on volcanism on the Moon and the other on sand crabs that live on Ocean Beach.</p>
<p>The first team worked with a scientist at NASA/JPL, using data and images gathered by the <a href="http://lro.gsfc.nasa.gov/">Lunar Reconnaissance Orbiter (LRO)</a>. The high schoolers decided to look at a volcanic structure on the far side of the Moon called the <a href="http://en.wikipedia.org/wiki/Compton%E2%80%93Belkovich_Thorium_Anomaly">Compton-Belkovich Feature</a> (CBF). Their question: How similar or different is CBF to volcanoes on the near side of the lunar surface?</p>
<p>The young researchers looked at <a href="http://en.wikipedia.org/wiki/Albedo">albedo</a>, elevation, radioactive <a href="http://en.wikipedia.org/wiki/Thorium">thorium</a> concentration and the surrounding geology. The youth found that Compton Belkovich is very different from other lunar volcanoes. Next, the team will attempt to identify potential sites that will yield the safest landing location and most scientific benefit.</p>
<p>A little closer to home, the second team looked at the influence of wastewater effluence on the population of sand crabs on San Francisco’s Ocean Beach. The <a href="http://www.waterandwastewater.com/plant_directory/Detailed/487.html">Oceanside Treatment Plant</a> lies just south of the beach and deposits copper, zinc and ammonia into the ocean.</p>
<p>The interns wondered what effect these chemicals have on the native <a href="http://en.wikipedia.org/wiki/Pacific_mole_crab">Pacific mole crabs</a> (<em>Emerita analoga</em>), which are a big part of the local ecosystem. Looking at previous studies on marine invertebrates, the team hypothesized that all three chemicals would negatively affect the abundance of these sand crabs.</p>
<p>The CiS interns have been studying the Pacific mole crabs on Ocean Beach for the past ten years. Using the data they collected between 2007 and 2010 and studying EPA data for the same four years, these young scientists found that while copper and zinc were bad for the populations, ammonia actually increased the abundance of these crustaceans.</p>
<p>Both teams enjoyed presenting to other researchers and their own Bright STaRS peers. Professional scientists seemed to thoroughly enjoy the presentations and gave the youth advice on where to take their research next.</p>
<p>And the high schoolers?</p>
<p>“My favorite part of AGU was presenting our research,” says senior Mollie. “Just like when teaching a lesson on the public floor of the museum, Angel and I had to gauge our visitor&#8217;s level of interest, and previous scientific knowledge. By tailoring our presentations and focusing on clearly and succinctly communicating our research, I felt I became more familiar with our project and its subtleties. Additionally, visitor&#8217;s suggestions and critiques of our project invigorated my interest in taking our Pacific mole crab research further in future years.”</p>
<p>“It was my first time at AGU and I had a wonderful time meeting scientists and presenting the research on lunar volcanoes to all,” says senior Rabiya. “It was definitely an amazing experience to be in a place where everyone is excited and curious about the same thing—the sciences!”</p>
<p><em>Image: Careers in Science Interns (from left to right) Mollie, Angel, Joseph, Reina, and Rabiya</em></p>
<img width="110" height="62" src="http://www.calacademy.org/sciencetoday/wp-content/uploads/2012/12/Interns-110x62.png" class="attachment-110x62 wp-post-image" alt="Interns" />]]></content:encoded>
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