diff --git a/domains/space-development/single-provider-ltv-selection-creates-artemis-program-concentration-risk.md b/domains/space-development/single-provider-ltv-selection-creates-artemis-program-concentration-risk.md
index a253c2284..2790f731f 100644
--- a/domains/space-development/single-provider-ltv-selection-creates-artemis-program-concentration-risk.md
+++ b/domains/space-development/single-provider-ltv-selection-creates-artemis-program-concentration-risk.md
@@ -25,3 +25,10 @@ NASA selected only the Lunar Dawn Team (Lunar Outpost prime, Lockheed Martin pri
 **Source:** SpaceNews, April 19, 2026 - NG-3 upper stage failure
 
 New Glenn's third flight suffered upper stage malfunction on April 19, 2026, grounding the vehicle pending FAA investigation. This directly threatens Blue Origin's 12-mission 2026 manifest and the Blue Moon MK1 timeline, which is the prerequisite for VIPER delivery in late 2027. The failure demonstrates how single-provider dependencies create cascading timeline risks across the lunar development pathway.
+
+
+## Supporting Evidence
+
+**Source:** SpaceNews, April 19, 2026 - NG-3 upper stage failure
+
+New Glenn's third flight suffered upper stage malfunction on April 19, 2026, grounding the vehicle pending FAA investigation. This directly threatens Blue Origin's 12-mission 2026 manifest and the Blue Moon MK1 timeline, which is the prerequisite for VIPER delivery in late 2027. The failure demonstrates the fragility of single-provider dependencies in critical mission chains.
diff --git a/domains/space-development/viper-prospecting-mission-structurally-constrains-operational-isru-to-post-2029.md b/domains/space-development/viper-prospecting-mission-structurally-constrains-operational-isru-to-post-2029.md
index d6c6fa44c..90ebbe365 100644
--- a/domains/space-development/viper-prospecting-mission-structurally-constrains-operational-isru-to-post-2029.md
+++ b/domains/space-development/viper-prospecting-mission-structurally-constrains-operational-isru-to-post-2029.md
@@ -24,3 +24,10 @@ VIPER is a science and prospecting rover, not an ISRU production demonstration.
 **Source:** SpaceNews, April 19, 2026 - NG-3 failure impacts Blue Moon timeline
 
 New Glenn grounding after NG-3 upper stage failure creates new uncertainty in VIPER delivery timeline. Blue Moon MK1's first mission is prerequisite for VIPER delivery in late 2027, but no alternative delivery pathway documented. This extends the structural constraint on operational ISRU beyond 2029 if New Glenn investigation and return-to-flight extends into 2027.
+
+
+## Extending Evidence
+
+**Source:** SpaceNews, April 19, 2026 - NG-3 failure threatens Blue Moon MK1 schedule
+
+New Glenn grounding after NG-3 upper stage failure creates additional delay risk for VIPER delivery timeline. Blue Moon MK1's first mission is prerequisite for VIPER delivery in late 2027, but with New Glenn now grounded pending FAA investigation and no alternative delivery pathway documented, the VIPER timeline faces new uncertainty beyond the existing structural constraints.