Search PBS Space Time
What are you looking for?
Results
2018-10-25: Will We Ever Find Alien Life?
11:26
: But the principle applies to a doomsday tech,
nuclear weapons,
genocidal nanobots, willful or negligent environmental destruction, you name it.
2015-11-18: 5 Ways to Stop a Killer Asteroid
01:54
: For a rock around 500 meters in diameter, the strike will have the energy equivalent of all currently operational
nuclear weapons
in the world.
2 result(s) shown.
