diff --git a/Observatory/AMDA/DoubleStar.xml b/Observatory/AMDA/DoubleStar.xml
index 62594c8..a2dc7f1 100644
--- a/Observatory/AMDA/DoubleStar.xml
+++ b/Observatory/AMDA/DoubleStar.xml
@@ -6,20 +6,36 @@
     <ResourceHeader>
       <ResourceName>Double Star</ResourceName>
       <AlternateName>Chinese/ESA Magnetospheric mission</AlternateName>
-      <ReleaseDate>2010-10-01T20:40:09Z</ReleaseDate>
-      <Description></Description>
+      <ReleaseDate>2017-01-01T20:40:09Z</ReleaseDate>
+      <Description>The Double Star mission was a unique scientific collaboration between Europe and China. For the first time, two Chinese 
+        spacecraft carried suites of instruments provided by European scientists and funded by European governments and ESA.
+        
+Double Star follows in the footsteps of ESA's ground-breaking Cluster mission by studying the effects of the Sun on 
+the Earth's environment. Conducting joint studies with Cluster and Double Star increases the overall scientific
+return from both missions.As its name suggests, Double Star involves two satellites - each designed, developed, launched,
+and operated by the China National Space Administration (CNSA). 
+
+The two spacecraft are called TC-1 and TC-2, where TC stands for 'Tan Ce' which means 'Explorer'.</Description>
       <Contact>
         <PersonID>spase://SMWG/Person/Christophe.Philippe.Escoubet</PersonID>
         <Role>ProjectScientist</Role>
       </Contact>
       <InformationURL>
+        <Name>ESA Home page</Name>
+        <URL>http://sci.esa.int/double-star/</URL>
+        <Description>Information about the Double Star mission</Description>
+       </InformationURL>
+      <InformationURL>
         <Name>NSSDC's Master Catalog</Name>
         <URL>http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=2003-061A</URL>
-        <Description>Information about the Double Star 1 mission</Description>
+        <Description>Information about the Double Star mission</Description>
       </InformationURL>
     </ResourceHeader>   
     <Location>
       <ObservatoryRegion>Earth.Magnetosphere</ObservatoryRegion>
+      <ObservatoryRegion>Earth.Magnetosphere</ObservatoryRegion>
+      <ObservatoryRegion>Earth.Magnetosphere.Magnetotail</ObservatoryRegion>
+      <ObservatoryRegion>Earth.Magnetosheath</ObservatoryRegion>
     </Location>
   </Observatory>
 </Spase>
diff --git a/Observatory/AMDA/DoubleStar1.xml b/Observatory/AMDA/DoubleStar1.xml
index 638cee9..942daa5 100644
--- a/Observatory/AMDA/DoubleStar1.xml
+++ b/Observatory/AMDA/DoubleStar1.xml
@@ -4,18 +4,25 @@
   <Observatory>
     <ResourceID>spase://CDPP/Observatory/AMDA/DoubleStar1</ResourceID>
     <ResourceHeader>
-      <ResourceName>Double Star 1</ResourceName>
+      <ResourceName>DoubleStar 1</ResourceName>     
+      <AlternateName>TanCe 1</AlternateName>
       <AlternateName>2003-061A</AlternateName>
-      <AlternateName>Tan Ce1</AlternateName>
       <AlternateName>TC 1</AlternateName>
       <ReleaseDate>2010-10-01T20:40:09Z</ReleaseDate>
-      <Description>Double Star 1 (also known as Tan Ce 1, and TC 1) is a Sino-European (CSNA-ESA) satellite that was launched by a Long March 2C/SM rocket from Xichang Satellite Launch Center in the Sichuan province of China (PRC) at 19:06 UT on 29 December 2003. The 330 kg, 260 W satellite is cylindrical, with a diameter of 2.1 m, a height of 1.4 m, and spins at a rate of 15 rpm. It carries eight instruments to probe Earth's magnetosphere, five from ESA and three from CNSA. (The ESA instruments are legacies from ESA's Cluster mission.) The data from all instruments will be stored on-board and dumped over three grounds stations: Shanghai and Beifing in China, and Villafranca in Spain. There will be coordination between the Cluster and Double Star missions. For more information, see
-
-http://www.esa.int/export/esaSC/120381_index_0_m.html</Description>
+      <Description>Double Star 1 (also known as Tan Ce 1, and TC 1) is a Sino-European (CSNA-ESA) satellite that was launched by a Long
+       March 2C/SM rocket from Xichang Satellite Launch Center in the Sichuan province of China (PRC) at 19:06 UT on 
+       29 December 2003. The 330 kg, 260 W satellite is cylindrical, with a diameter of 2.1 m, a height of 1.4 m, and spins 
+       at a rate of 15 rpm. It carries eight instruments to probe Earth's magnetosphere, five from ESA and three from CNSA. 
+       (The ESA instruments are legacies from ESA's Cluster mission)</Description>
       <Contact>
         <PersonID>spase://SMWG/Person/Christophe.Philippe.Escoubet</PersonID>
         <Role>ProjectScientist</Role>
-      </Contact>
+      </Contact> 
+      <InformationURL>
+        <Name>ESA Home page</Name>
+        <URL>http://sci.esa.int/double-star/</URL>
+        <Description>Information about the Double Star mission</Description>
+       </InformationURL>
       <InformationURL>
         <Name>NSSDC's Master Catalog</Name>
         <URL>http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=2003-061A</URL>
@@ -25,6 +32,13 @@ http://www.esa.int/export/esaSC/120381_index_0_m.html</Description>
     <ObservatoryGroupID>spase://CDPP/Observatory/AMDA/DoubleStar</ObservatoryGroupID>
     <Location>
       <ObservatoryRegion>Earth.Magnetosphere.Main</ObservatoryRegion>
+      <ObservatoryRegion>Earth.Magnetosphere</ObservatoryRegion>
+      <ObservatoryRegion>Earth.Magnetosphere.Magnetotail</ObservatoryRegion>
+      <ObservatoryRegion>Earth.Magnetosheath</ObservatoryRegion>
     </Location>
+     <OperatingSpan>
+      <StartDate>2003-12-29T19:06:00</StartDate>
+      <StopDate>2007-10-10T00:00:00</StopDate>
+    </OperatingSpan>
   </Observatory>
 </Spase>
--
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