Expanding mass shell — Free Astrophysics Illustration | GPAI

Astrophysics

Expanding mass shell

Schematic physics-style depiction of a thin spherical shell of matter expanding outward. Show the shell either in cross-section as a clean circular ring or as a faint translucent sphere/cutaway, with a clear hollow center and uniform narrow thickness. The shell should appear inflated, detached, smooth, and symmetric, with a thin glowing or lightly emphasized outer boundary. Use pale blue, light gray, bluish-gray, or pale pink-orange tones, and include subtle outward radial motion marks to indicate expansion. The interior remains mostly empty rather than solid. Use clean thin linework and flat minimal shading to match the set.

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