Nothing nothing at all
no
No astronaut has ever gone to Uranus.
yes
No humans have ever been to Uranus. Voyager 2 is the only space probe that has visited it.
yes
0 is the answer
5
none
by satillites.
1is the answer
No person has ever been to the planet Uranus or even to the moons of the planet Uranus (which would be much easier to visit). Indeed, human beings have never been anywhere farther than the moon. Automated probes have been sent to the edge of the solar system and out into interstellar space, but human beings have not gone nearly that far.
As of now, there have been no robotic missions sent to Uranus. All exploration of Uranus has been undertaken by remote observation from telescopes and spacecraft, such as the Voyager 2 probe that flew by Uranus in 1986. There may be future missions planned to explore Uranus with robotic spacecraft.