Full Mosaic With Outlines of Detail Sections and Center of Expansion Marked
Cassiopeia A, Cas A
About 3,400 parsecs (11,000 light-years)
The bright remnant shell has a diameter of about 4 parsecs (13 light-years).
Principal Astronomers: R. Fesen (Dartmouth), J. Morse (Univ. of Colorado), R. Chevalier (Univ. of Virginia), K. Borkowski (North Carolina State Univ.), C. Gerardy (Dartmouth), S. Lawrence (Hofstra Univ.), S. van den Bergh (Dominion Astrophys. Obs.)
F850LP, F675W (R), F450W (B)