A color composite image of SN 1987A. The unresolved 12CO 2-1 line emission detected by ALMA (red). The red ellipse at lower is the synthesized beam. Note also the H emission (blue), and the [Si I] + [Fe II] 1.644 micron emission (green in the ring; yellow in the ejecta) observed with HST (Larsson et al. 2013).
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The NSF National Radio Astronomy Observatory and NSF Green Bank Observatory are facilities of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.

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