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We have resolved stars in the core of the old SMC globular cluster NGC 121 with images from the refurbished Hubble Space T elescope and Wide Field Planetary Camera 2. Our photometry reaches 1.5 mag below the main-sequence turno †, with negligible Ðeld contamination. A blue straggler star (BSS) sequence of 42 candidates is clearly seenÈthe Ðrst such detection in an extragalactic globular cluster. The BSSs are more centrally concentrated than the subgiant, red giant, and horizontal branch stars.doi:10.1086/306423 fatcat:ccaeomo3ejbfnp6jem2kfmsebm