Cassiopeia A Supernova Remnant - Stellar Explosion in Deep Space #2223203 (License: Personal Use)

This high-resolution image captures Cassiopeia A, the youngest known supernova remnant in the Milky Way, located about 11,000 light-years away. The expanding shell of gas and dust-rich in oxygen (green), sulfur (red), and hydrogen (blue)-reveals the violent dynamics of stellar death. Bright point-like sources within the remnant include the neutron star left behind after the explosion.

Used on astronomy educational sites, NASA/ESA outreach pages, and space-themed blogs to illustrate supernovae, stellar evolution, or Hubble/Chandra telescope imaging. Matches user intent for learning about cosmic phenomena, astrophysics visuals, or science communication.