In Brief
Elon Musk may be trolling the world with his calls to send a Tesla Roadster to space, but the stunt could be dangerous. Contributing to the accumulation of space junk isn't exactly the good samaritan's way of beginning the next phase in Earth's interplanetary journey.

The images are striking: a human-like figure, inside a cherry red Tesla Roadster, the Earth looming in the distance. And who, really, would want to be a killjoy about this?