yes there has been
No, Uranus is completely gaseous and has no land that would slide. Walking on Uranus would be like walking on a cloud, only much stinkier because there is a lot of methane.
There has never been any evidence that Mercury supports life of any type.
yes craters and moutins
Yes, there have been probes sent to Mercury. Messenger and Mariner 10.
Mercury does not have any land masses or islands, as it is a rocky planet with a barren surface covered in craters and plains. The surface of Mercury is heavily cratered due to impacts from asteroids and comets. It does not have any large bodies of water or features resembling land masses or islands like those found on Earth.
yes
No. Mercury is a barren planet covered in nothing but rocks and dust.
Mercury has no atmosphere to speak of, and therefore it has no weather.
no. no humans have ever been to any of the other planets.
Yes, the Messenger space probe crash-landed on to Mercury on 30 April 2015.
No natural satellites of the planets Mercury or Venus have ever been discovered.
Mercury has no moons, and no rings have been observed. Either moons or rings may have existed, but this is not considered a likely possibility.