How long does it take to reach the planets in the Solar System? That means it depends on how fast you go.
But let’s see how long it has been since our spacecraft reached their destination. Launched on November 3, 1973, Mariner10 took 147 days to reach Mercury on March 29, 1974. But the speed still needs to go down a bit to reach the orbit. It took Messenger 1260 days to reach orbit. It will still…
