Yeah, but it's coming back to Earth, where it came from. This is an object that could land on Mars or another planet. Great measures have been taken in the pa

Yeah, but it's coming back to Earth, where it came from. This is an object that could land on Mars or another planet. Great measures have been taken in the past to ensure that other planets aren't contaminated before we've had a chance to understand their existing biology. Elon Musk is the kid who comes and knocks over some other kids' block tower for his own amusement. https://en.wikipedia.org/wiki/Planetary_protection https://en.wikipedia.org/wiki/Planetary_protection