A robotic spacecraft, is a spacecraft with robots in it,
yes
Robotic spacecraft
no u smell like cheese
All spacecraft (from Earth) that have visited Mercury have been robotic. There were no human passengers. The chances are near zero that a stowaway microbe would have survived the long journey.
There were two: Mariner 10 and Messenger.
"robotic"
Unmanned - Space probes are a form of robotic spacecraft.
None. Mercury was discovered before spacecraft were invented.
The first spacecraft to visit Mercury was Mariner 10 in 1974 -> 1975
Yes there was a mission called U-N 98 to mercury in 1976. Two people were aboard and they had gotten close to mercury and bursted into flames. Both died, bodys never found.
they found mercury at the LOST AND FOUND!