from the shades-of-kessler dept.
erice writes "A chuck of space debris came within 335 meters of the space station, forcing the crews to head to their escape capsules and prepare for emergency evacuation to Earth. '[NASA's] Associate Administrator for Space Operations, Bill Gerstenmaier, said it was the closest a debris object had ever come to the station. An analysis was now underway to try to understand its origin, he added.'"
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"