2019 in science so far

This year in science so far (click to zoom). Clockwise from top left:

• Lunar eclipse of 21 January (image credit: Giuseppe Donatiello)
• Kuiper belt object Ultima Thule photographed by New Horizons space probe (image credit: NASA)
• New frog species Pseudophilautus conniffae described (image credit: S. Batuwita, M. De Silva, and S. Udugampala)
• Major redefinition of SI units (image credit: Emilio Pisanty)

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