This is the Light-up Golf Ball from Night Sports. It's an LED-infused golf ball that lights up in one of four colors when you hit it, and stays lit for eight minutes while you go find it for your next shot. Each ball has a 40-hour battery, too. There's no cool laser trail like in the above photo, unfortunately, but we can all agree that the laser trail time-lapse effect makes the above photo look too cool to pass up.
I'm not saying you should use these balls to sneak onto a world-class golf course in the middle of the night when there's nobody around, but I guess you could argue that I'm not not saying it. Whatever you decide to do with your life is your business, but if you sneak onto a world-class golf course in the middle of the night, leave it a better place than you found it. Same goes for the daytime, too. Replace your divots, is what I'm actually saying.
Also, maybe don't use these things on water holes or if you have a tough time keeping your shots in the fairway, because a four-pack costs $30. That's $30. For four golf balls. That's $7.50 each time you shank one. You can also buy a three-pack for $25 ($8.33 every time you shank one). They're expensive, in other words, but stuffing LED lighting into golf balls can't be cheap.
No word on whether these balls play like regular balls, though the company behind them (unsurprisingly) says, "Night Sports Light-up Golf Ball provides the high performance aerodynamics, control, accuracy, feel and distance you expect from a professional quality ball." The three reviews on Amazon are all five stars, but they each look suspiciously similar in tone and length.
Here's a video of what the balls look like when they're hit: