Pluto: ‘Recent’ volcanism raises puzzle — how can such a cold body power eruptions?

What extra details are lurking in the poorly imaged half of Pluto? 

The week that was

Round-up of science news from the week that includes a possible vaccine for dengue, cosmic rays in the Milky Way and other news stories

World eagerly awaits New Horizons’ flyby past Pluto

Scientists are eager to collect data on the dwarf planet’s chemical and atmospheric makeup using the Ralph spectrometer 

Pluto's moons wobble chaotically

Shifting gravitational field of Pluto-Charon double planet system behind the phenomenon, say scientists

Four volcanic hotspots in the Solar System

Venus is far from the only world beyond Earth to exhibit signs of volcanic activity

A mysterious ring on a dwarf planet is puzzling astronomers

Quaoar, which revolves the Sun beyond Neptune, has a ring that is too far out according to current theories