<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><title> Andromeda's Colorful Rings </title><style></style></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:16.0pt;font-family:"Comic Sans MS";color:#1F497D'>Fyi for all science teachers<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:16.0pt;font-family:"Comic Sans MS";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:16.0pt;font-family:"Comic Sans MS";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> NASA News Services [mailto:nasa_subscriptions@service.govdelivery.com] <br><b>Sent:</b> Tuesday, January 29, 2013 10:39 AM<br><b>To:</b> mslindacarter@comcast.net<br><b>Subject:</b> Andromeda's Colorful Rings<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div align=center><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=700 style='width:525.0pt'><tr><td style='padding:0in 0in 0in 0in'><p>You are subscribed to Image of the Day for NASA. This information has recently been updated, and is now available.<o:p></o:p></p><div style='margin-bottom:24.0pt'><div style='margin-bottom:.05in'><p class=MsoNormal><a name=ri6808227></a><b><span style='font-size:14.5pt'><a href="http://links.govdelivery.com:80/track?type=click&enid=ZWFzPTEmbWFpbGluZ2lkPTIwMTMwMTI5LjE0OTM3NDQxJm1lc3NhZ2VpZD1NREItUFJELUJVTC0yMDEzMDEyOS4xNDkzNzQ0MSZkYXRhYmFzZWlkPTEwMDEmc2VyaWFsPTE3MzczNjQ2JmVtYWlsaWQ9bXNsaW5kYWNhcnRlckBjb21jYXN0Lm5ldCZ1c2VyaWQ9bXNsaW5kYWNhcnRlckBjb21jYXN0Lm5ldCZmbD0mZXh0cmE9TXVsdGl2YXJpYXRlSWQ9JiYm&&&100&&&http://www.nasa.gov/mission_pages/herschel/multimedia/pia16681.html">Andromeda's Colorful Rings</a><o:p></o:p></span></b></p></div><div style='margin-bottom:.05in'><p class=MsoNormal><i><span style='font-size:11.0pt;color:#666666'>01/29/2013 12:00 AM EST<o:p></o:p></span></i></p></div><p class=MsoNormal><o:p> </o:p></p><div style='margin-bottom:.05in'><p class=MsoNormal>The ring-like swirls of dust filling the Andromeda galaxy stand out colorfully in this new image from the Herschel Space Observatory, a European Space Agency mission with important NASA participation. The glow seen here comes from the longer-wavelength, or far, end of the infrared spectrum, giving astronomers the chance to identify the very coldest dust in our galactic neighbor. These light wavelengths span from 250 to 500 microns, which are a quarter to half of a millimeter in size. Herschel's ability to detect the light allows astronomers to see clouds of dust at temperatures of only a few tens of degrees above absolute zero. These clouds are dark and opaque at shorter wavelengths. The Herschel view also highlights spokes of dust between the concentric rings. The colors in this image have been enhanced to make them easier to see, but they do reflect real variations in the data. The very coldest clouds are brightest in the longest wavelengths, and colored red here, while the warmer ones take on a bluish tinge. These data, together with those from other observatories, reveal that other dust properties, beyond just temperature, are affecting the infrared color of the image. Clumping of dust grains, or growth of icy mantles on the grains towards the outskirts of the galaxy, appear to contribute to these subtle color variations. These observations were made by Herschel's spectral and photometric imaging receiver (SPIRE) instrument. The data were processed as part of a project to improve methods for assembling mosaics from SPIRE observations. Light with a wavelength of 250 microns is rendered as blue, 350-micron is green, and 500-micron light is red. Color saturation has been enhanced to bring out the small differences at these wavelengths. Image credit: ESA/NASA/JPL-Caltech/NHSC<o:p></o:p></p></div></div><div id="mail_footer"><p><a href="http://links.govdelivery.com:80/track?type=click&enid=ZWFzPTEmbWFpbGluZ2lkPTIwMTMwMTI5LjE0OTM3NDQxJm1lc3NhZ2VpZD1NREItUFJELUJVTC0yMDEzMDEyOS4xNDkzNzQ0MSZkYXRhYmFzZWlkPTEwMDEmc2VyaWFsPTE3MzczNjQ2JmVtYWlsaWQ9bXNsaW5kYWNhcnRlckBjb21jYXN0Lm5ldCZ1c2VyaWQ9bXNsaW5kYWNhcnRlckBjb21jYXN0Lm5ldCZmbD0mZXh0cmE9TXVsdGl2YXJpYXRlSWQ9JiYm&&&101&&&http://content.govdelivery.com/bulletins/gd/USNASA-697c4e?reqfrom=share" target="_blank"><span style='text-decoration:none'><img border=0 width=83 height=16 id="_x0000_i1025" src="https://public.govdelivery.com/images/share_this.gif?1278100473" alt="Bookmark and Share"></span></a><o:p></o:p></p><p>This e-mail update was generated automatically based on your subscriptions. 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