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PhillieBot for Cy Young? It's unlikely. But the one-armed, three-wheeled robot, designed by engineers at the University of Pennsylvania, will throw out the ceremonial first pitch before Wednesday's game between the Philadelphia Phillies and Milwaukee Brewers as part of Science Day festivities at Citizens Bank Park, said Evan Lerner, a spokesman for Penn's engineering school. The pitching robot has been in the makings for a month and a half as Penn engineers Jordan Brindza and Jamie Gewirtz assembled parts and wrote software in their spare time, Lerner said. They started with a Segway, gave it a robotic arm and added a third wheel. They also gave it a pneumatic cylinder, which delivers a burst of compressed carbon dioxide to power the pitch. The robot's computer brain can be tweaked to change pitch velocity and trajectory. On Monday, Brindza and Gewirtz took PhillieBot out to the mound for its final test, The Philadelphia Inquirer reported. After the press of a button, the robot's mechanical arm reared back and then moved toward home plate; at the top of its delivery, it flicked its mechanical "wrist" and shot the ball forward. The ball appeared to be traveling no more than 30 or 40 miles an hour, the Inquirer reported. But that was by design, since the Phillies didn't want the pitch approaching Major League speeds.

The Associated Press is reporting that two PackBot ground robots from iRobot have entered Unit 1 and Unit 3 of the crippled Fukushima nuclear power plant and performed readings of temperature, oxygen levels, and radioactivity. The data from the robots, the first measurements inside the reactors in more than a month since a massive earthquake and tsunami damaged the plant, revealed high levels of radioactivity -- too high for humans to access the facilities. The remote-controlled robots entered the two reactors over the weekend. Details of the mission -- such as what areas of the reactors the robots inspected and from where they were operated -- are still scarce, but Tokyo Electric Power Co. (TEPCO), the plant's operator, said that the robots opened and closed "double doors and conducted surveys of the situation" inside the buildings.