From Infogalactic: the planetary knowledge core
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- Yutu, China's lunar rover, suffers an unspecified "mechanical control abnormality" shortly before going dormant for the two-week-long lunar night. The solar-powered vehicle has been on the Moon since 15 December and had survived one lunar night. (Xinhua), (abc.net.au)
- Average peak concentrations of PM2.5 (fine particulate air pollution) are more than twice as great in Delhi as in Beijing during the first three weeks of the year. (New York Times)
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