Why is this infamous iceberg turning blue?
Iceberg A-23A broke off of Antarctica’s Filchner Ice Shelf 40 years ago. NASA Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Iceberg A-23A is looking a little blue these days. In late December 2025, NASA and NOAA’s Terra satellite spotted the massive iceberg coveredContinue Reading










