A spacecraft visited in 2011, not 2012. There is currently one spacecraft in orbit around Mercury. NASA's MErcury Surface, Space ENvironment, GEochemistry and Ranging (MESSENGER) probe.
It was launched on August 3, 2004 and entered orbit on March 18, 2011. NASA has announced that it will extend the mission longer in the harsh environments of Mercury.
For more information check the MESSENGER wikipedia article.
Yes, but they have not landed.
yes
Just one.
No person went on Mercury or might not ever go on Mercury because of its average temperature of 700degres Fahrenheit or around 350degres Celsius.
Yes.
The space shuttle is an Earth orbit vehicle. No humans have ever travelled to any body other than the Moon (from 1969 to 1972). All other space exploration has been by unmanned probes.
Mariner 10 and MESSENGER flew past Mercury.
There has been no landings or humans to the planet Mercury.
No spacecraft has ever landed on Mercury, but it was studied by Mariner 10 and MESSENGER.
A spacecraft left earth in late 1957 and returned in early 1958. Other than human spacecraft, no alien space craft has ever left or come to visit our planet, that we know of. It is possible some alien space craft may have visited earth millions of years ago. It is highly unlikely any craft has done so within the past few centuries.
I think that they have tried but failed. But i could be wrong...
No, nobody has travelled to Saturn. However, spacecraft have visited it.