Pluto Has a ‘Tail,’ Say Researchers

Artist's concept of the New Horizons spacecraft during a planned encounter with Pluto and its moon, Charon. John Hopkins University Applied Physics Laboratory/Southwest Research Institute

Researchers have discovered that Pluto, the dwarf planet, has a “tail.”

In mid-July, the New Horizons space probe flew past Pluto and it went directly into its shadow, giving an opportunity to see how the Sun affects its atmosphere.