Mercury is about twice as big as pluto, but still is the smallest object called a "planet" orbiting the Sun. The question is: how much smaller will it get? It will never get anywhere near as small as the former ninth planet, but will the IAU see fit to demote it too as it continues shrinking? Only time will tell.

Meanwhile, Mercury's molten iron core continues to cool, shrinking the planet from the inside. Small particles of solid iron 'snow' rain down toward the ever-widening solid core. But even as the solid grows it's denser than the liquid and so takes up less space. This has been going on probably for billions of years and over time the shrinkage has caused Mercury's crust to buckle and fold up on itself, as seen here (that y-shaped fracture in the left side of the image is a huge fracture in the rock. The whole picture is about 200 kilometers wide):

(from NASA)

On the right hand side of the image, the craters with the soft-looking rims appear to be old impact basins that have been filled in with lava, indicating the Mercury once had some serious volcanoes exploding on its surface. Why did the volcanoes die off? Mercury cooled off. Just like on Mars and the Moon, Mercury was fiery when it first came into being, but lost its heat in the roughly 4.5 billion years since, silencing is volcanic activity. Earth is cooling in a similar way and in a few billion years it will get too cold for volcanoes too. When it does it will go quiet forever.

Source: Science, NASA, via LA Times

The front lobby offered up even more Star Wars items, like full-sized Vader and Boba Fett costumes, Han's Blaster, and more. Next to the reception desk were two huge framed posted for The Creature from the Black Lagoon and Dracula. However, towering over everything in the center is a large monument built to honor Willis Harold O'Brien, the man who pioneered stop-motion in animation with the visual effects in King Kong, and later animated dinosaurs in The Lost World, co-wrote King Kong vs. Godzilla, and had Ray Harryhausen as an assistant. A surprisingly touching tribute to man who needs a lot more recognition.

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• Fracture: In the far future, the effects of global warming have created terrain-deforming weaponry and split the United States in two. The Atlantic Alliance on the East, and the Republic of Pacifica on the West. You play a partially cybernetic human who has access to things like grenades they raise and lower the terrain, open swirling vortexes, send enormous molten rock formations into the air, and burrow through the Earth. If you want to beat up on the terrain of future San Francisco, this is right up your alley.
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• Star Wars: The Force Unleashed: Play as Darth Vader's secret apprentice as you hunt down the rest of the remaining Jedi, and use your amped-up Force powers to literally rip TIE-Fighters out of the air and hurl them at opponents. Set between Episodes 3 and 4, you'll encounter characters and settings from both sets of movies, mess people up with the Force, and use your lightsaber like it's going out of style. Hopefully we'll also find out why we never found out Vader had a secret apprentice before as well.
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• Lego Indiana Jones: The Original Adventures: We'll be the first to admit that Indiana Jones has a tenuous scifi connection, at best. The guy is a swashbuckling archaeologist who hunts down supernatural artifacts and doodads, but hey... at the end of the day he's a scientist and a professor. Plus he's pretty kickass and might be encountering aliens in Indy IV. This game continues the idea of encasing Indiana in Lego, like the Lego Star Wars: The Complete Trilogy.