Image: Frozen carbon monoxide in Pluto's 'heart'

Peering closely at the "heart of Pluto," in the western half of what mission scientists have informally named Tombaugh Regio  (Tombaugh Region), New Horizons' Ralph instrument revealed evidence of carbon monoxide ice.  

New horizons brings Pluto's mysterious moons into play

Drifting along at what for decades was regarded as the outer boundary of our solar system, icy Pluto is far from alone. The dwarf planet has moons – at least five of them – which are all fascinating little worlds in their ...

Catch a fine lunar planetary grouping this weekend

Phew! Our eyes and thoughts have been cast so far out into the outer reaches of the solar system following New Horizons and Pluto this week, that we're just now getting to the astronomical action going on in our own backyard.

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