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This week, we put a robot on a comet. Randall Munroe of XKCD live-cartooned the whole thing (here’s a GIF). Matthew Francis and Megan Garber wrote great explanations. The comet has a song. Phil Plait talks about the lander’s (possibly) final moments. Monica Grady’s reactions to the comet landing were the absolute best thing. And Alice Bell, Jess Zimms and Dr24hours explained why people are rightly mad about that shirt.

Astonishing sequence of hunting dogs doing their thing, filmed from the air

“We may think of them as silent, but fish