The International Astronomical Union (IAU) has spoken and christened Pluto's newest and tiniest moons Kerberos and Styx. Maybe you cast a vote in the informal Pluto moon naming contest in February and ...

Back in the 1980’s, a now-defunct magazine called Science Digest held a contest to name Planet X — the still-undiscovered world that astronomers believed might lie out beyond Pluto. One of the best ...

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Pluto will mark a birthday of sorts on March 23, 2178. No one is likely to be there to celebrate it, of course. Even if ...

Astronomers recently discovered two previously unknown moons orbiting Pluto, bringing its total up to five. How this supposed non-planet can have so many moons is beyond me, but whatever. Anyway, the ...

Astronomers announced a contest Monday to name the two itty-bitty moons of Pluto discovered over the past two years. Pluto is the Roman equivalent of the Greek's Hades, lord of the underworld, and its ...