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P. M. Shober et al 2019 AJ 158 183

An extremely slow fireball was recently observed travelling at just 11 km/s. This object was a “minimoon”, or a temporarily captured orbiter — an object gravitationally captured by the Earth-Moon system.

M. R. Combi et al 2019 ApJL 884 L39

SOHO observations of the hydrogen coma of comet C/2017 S3 (PanSTARRS) allow for an estimate of the size of the nucleus of the comet just before its final outburst and apparent disintegration.

Samuel N. Quinn et al 2019 AJ 158 177

TESS has discovered a multi-planet system of up to five planets around the dwarf star TOI-125, providing an opportunity to study planets of similar size while controlling for age and environment.

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