No not yet
No astronauts have ever been to Mars, and no rock samples have ever been sent to Earth.
No astronauts, but many robots have been there.
Testing by probes that have been sent to Mars indicate that water does exist.
As of now, no astronauts have stepped on Mars. All manned missions so far have been to the Moon. Plans for manned missions to Mars are currently in development by various space agencies, with the goal of landing astronauts on the planet in the future.
a lot. scientists have discovered frozen water on mars, the most important thing we need to stay alive. astronauts have never been to mars because the weather is too cold. in the 2030's it is a possiblety that astronauts will visit mars
There have never been astronauts on Mars. The current plan, once we start landing people there in the late 2020s, is for them to eat food that was freeze-dried beforehand, as well as food that is brought from Earth for cultivation.
There are no people on Mars, and no astronauts have visited Mars. The Moon, yes, Mars, no.
I am pretty sure that when astronauts were shoveling they found some ice. nasa is pretty sure they have found some water but no astronauts have ever been there
Astronauts have not landed on Uranus and Neptune, as they have only visited the Moon, Mars, and the satellites of Jupiter and Saturn. Exploration of these distant gas giants would require advanced technology and significant challenges to overcome.
no not yet .but only the probes have been sent there.
You appear to be misinformed. It is more difficult to send people to mars because it is so much farther away. That is why we have not sent astronauts to mars yet, but we have sent astronauts to the moon.
to run.