Outflow Gaps in Webb’s FS Tau Image Reveal Stars Grow in Episodic Bursts

James Webb Space Telescope’s new infrared image of the FS Tau stellar nursery reveals gap structures in protostellar outflows 450 light-years away — direct evidence that young stars grow in episodic accretion bursts, not continuously. Webb’s NIRCam six-filter data also maps polycyclic aromatic hydrocarbon chemistry and compressed dust ridges around FS Tau B.