Observations suggest the early Universe is ripe for exploration.
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Tanvir, N. R. et al. Nature 461, 1254 - 1257 (2009).
Salvaterra, R. et al. Nature 461, 1258 - 1260 (2009).
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Sanderson, K. Most distant gamma-ray burst spotted. Nature (2009). https://doi.org/10.1038/news.2009.1043