Will any human-made object go faster than 1% of the speed of light before 2060?
Prediction market on manifold. Can be accidental, can have already happened. Must be a human-built object. Must have a method for propulsion (whether or not such method is on itself). Minimum mass of the object: 10 grams
Liquidity: $1,000. Resolves: 1/1/2060.