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Earth, Planets and Space
Fig. 1 | Earth, Planets and Space

Fig. 1

From: Environmental assessment in the prelaunch phase of Hayabusa2 for safety declaration of returned samples from the asteroid (162173) Ryugu: background monitoring and risk management during development of the sampler system

Fig. 1Fig. 1

a Photographs of the Hayabusa2 spacecraft in the clean room at ISAS/JAXA (after Tachibana et al. 2014). Please note that hairdressing, perfumes, skincare, cosmetics, hand sanitizer, lotions, and hair spray are prohibited for any visitors to JAXA's clean room facilities. b, c Schematic design and appearance of the monitor coupon equipped with an aluminium schale, Pyrex schale, aluminium disk, sapphire glass disk, aluminium square plate (#1, #2), and carbon adhesive tape (#1, #2) for the Hayabusa2 witness coupon (after Sawada et al. 2017). d Environmental assessment procedures for timelines, locations, and operational profiles from static monitoring. Blue and green bars represent the installation time of the coupon and the nitrogen gas purge time into the sampler system, respectively. Abbreviations for locations are defined at the end of the main text

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