Juno is the fastest ever human made object
NASA’s Jupiter mission, Juno spacecraft is the fastest human made object ever. Accelerated by Jupiter’s gravity, Juno's top speed is estimated at 265,000 km/h relative to the earth. The all-time speed record was previously held by NASA's Helios 1 and Helios 2 spacecraft, launched in the mid-1970s to study the sun. 