Overview
- New NIRCam imagery and analysis from Webb GO programme #4571 (PI J. H. Kastner) were released with an Astrophysical Journal study in late October 2025.
- The nebula’s outstretched lobes are revealed as closed, bubble‑like structures about three light‑years each, traced by molecular hydrogen emission.
- A purple, elongated ‘S’ of ionized iron maps a fast jet from the center where it strikes earlier stellar ejecta, highlighting active outflow dynamics.
- Webb shows the central star as exceptionally hot and luminous yet red in infrared due to a surrounding shroud of hot dust, likely arranged in a disk.
- Researchers suggest a hidden companion may account for the hourglass morphology; NGC 6537 lies roughly 3,000 light‑years away in Sagittarius.