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Bow shocks reveal how a dying star returns matter to interstellar space
This is a summary of: van Dokkum, P. et al. Numerous bow shocks in the outer Helix Nebula. Nature 656, 334–337 (2026).
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‘Expert opinion’ is published under a CC BY 4.0 licence and Figure 1 is published under a CC BY-NC-ND 4.0 licence.
Kwok, S., Purton, C. R. & FitzGerald, P. M. Astrophys. J. 219, L125–L127 (1978).
Karakas, A. I. & Lattanzio, J. C. Publ. Astron. Soc. Aust. 31, e030 (2014).
O’Dell, C. R., McCullough, P. R. & Meixner, M. Astron. J. 128, 2339–2356 (2004).
Chen, S. et al. Publ. Astron. Soc. Pac. 137, 084103 (2025).
Klein, R. I., McKee, C. F. & Colella, P. Astrophys. J. 420, 213–236 (1994).