text: Venus is sometimes known as earth´s twin because venus is the closest planet to earth in terms of density and size. Scientist have tried to get to get numerous spacecrafts on venus but no spacecraft survived the landing for more than a few hours. Venus is one of the hardest planet to study and research. It´s hard for astrounauts to go to venus because temperature is over 800 degrees Fahrenheit and the atmospheric pressure is 90 times greater than what humans experience on our own planet.