Feathery bridge between galaxy's arms discovered

2021-11-24

A bridge of gas resembling a feather has been observed between a pair of the Milky Way's spiral arms and is described in the Astrophysical Journal Letters. The Gangotri wave, observed using APEX telescope data, reaches from the Norma arm to the 3-kiloparsec arm near the galaxy's center and features a sine-like wave.

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