Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: The New Horizons spacecraft is preparing to send back the first close up images of Pluto following its historic flyby of the dwarf planet, but already there is a growing, and rather dark, list of names for the features scientists expect to see in them. Named after the Roman god of the underworld itself, the mysterious reddish coloured planet could have a series of craters, canyons, plains and chasms named after dark gods and demons from different cultures. Among those proposed are Ammit, the Eyptian goddess who devoured the souls of the sinful; Supay, the Inca's ruler of the underworld and Erlik, the underworld god in Mongolian mythology.New Horizons made its closest approach to Pluto after 3 billion-mile journey that took nine and a half yearsTo celebrate, it released a new image showing Pluto's craters, icy plains and a stunning heart-shaped patchProposed names for features on the planet's surface pay tribute to gods of the underworld from ancient culturesA 'waterfall of data' was obtained in the flyby and the first close up images are expected at 3pm EDT today 
 Question:We know _ is in good shape, and has reported a successful run of observations, so we're hoping to see Pluto’s papaya whip coloured surface of mixed ices in superb resolution.'

New Horizons