Challenge: Can you save Earth from a Killer Asteroid? | Space Time | PBS Digital Studios

You are the planet's only hope! Solve the equation and save humanity. Find necessary information below. Tweet at us! @pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: Help translate our videos! Assumption: You have a state-of-the-art pulsed fusion rocket engine capable of exhaust velocities of 500 km/s Important Fact #1: Your spaceship must fly ahead of the asteroid at a distance of 1 times the asteroid's radius, 325m above the surface or 650m from the center of mass Important Fact #2: The thrusters on this spacecraft are angled so that the ship's propellant just misses a "spherical" Apophis. You'll need the rocket equation: You do not need Calculus Make sure you title your email: "Spacetime Killer Asteroid Challenge" Good luck!