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You know that frustrating, annoying, sometimes panicked feeling you get when your Mac isn’t doing what you expect? If an application freezes or your computer is generally misbehaving, try these tips to escape with minimal disruption. Use Force Quit when an application is unresponsive. Choose Force Quit from the Apple menu or press Command+Option+Esc keys. How old is the universe? How unusual is the Solar System? How will it all end? Oxford astronomers Chris Lintott and Robert Simpson provide an overview of the last 13.7 billion years of cosmic evolution, answering these questions and more.
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