Because it is very hot
It isn't possible. Surface temperatures on Venus exceed 800 degrees Fahrenheit and pressure is more than 90 times that at sea level on earth. Any astronaut on Venus would be cooked and crushed at the same time.
No astronaut has visited Venus yet.
Dennis Tito was the first astronaut to travel to the planet Venus.
Astronaut did not land in Venus because the planet is hot. If the astronaut land on Venus, they will burn their selfs.
Immediate death Not necessarily immediately, don't forget that he would have a capsule and spacesuit to protect him for a while. How long would depend of the strength of the capsule. As the pressure of the atmosphere of Venus is equivalent of being a kilometre below the surface of the oceans. Then there is the heat, Venus is hotter than Mercury at 4600C, because of its thick atmosphere. So an Astronaut would survive, the question is 'For how long'.
No it is impossible to land on Venus because of the hot surface heat that Venus has and plus there's lots of volcanoes, storms and lightning so if you do land, it will probably destroy or kill whatlands on Venus.
No, no human has ever walked on Venus. The extreme heat, crushing atmospheric pressure, and toxic environment make it impossible for humans to currently explore the surface of Venus.
Venus is considered impossible to live on because of its extremely high surface temperatures, toxic atmosphere, and pressure that is 92 times that of Earth.
The "topography" of Venus is the three dimensional shape of the surface of Venus.
The atmosphere on the surface of Venus is cloudy.
Venus
We don't know. That's like asking if the Earth will ever blow up. More likely, in a few billion years when the Sun runs out of fuel and starts to become a red giant, Venus will be consumed, along with Mercury, Earth, and Mars.