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Be it via time travel or even more convoluted plot points, it's a major tradition in Star Trek lore for different generations of Starfleet officers to meet and share the screen.

On Monday, Paramount announced Captain Kirk (Chris Pine) will meet his father, the late George Kirk (Chris Hemsworth) in the fourth film of the rebooted franchise. How the Kirks will react to each other is any Trekkie's best guess — but there's plenty of examples to look back on in Trek's 50 year history to see what happens when generations collide.

It's a big universe out there — and anyone can to bump into another at any moment.