Rate the following essay on its writing, argument, and language skills:
It's well known that Venus is not the safest planet for exploration. Although it's often closest to us in terms of space travel, its weather conditions are harsh and often unpredictable. The planet is surrounded by an atmosphere of 97 percent carbon dioxide. Venus is also covered with a thick cloud like gas that consists of highly corrosive sulfuric acid, and it's atmospheric pressure is 90 times more what we have on Earth. Not only is Venus's 'sky' highly toxic, but the average temerature is over 800 degrees. These conditions are new and forein to humans and makes it highly dangerous for space exploration.

So why are scientist so persistant on exploring this planet? Well space travel wise, its the closest planet to us. While distance in space is no joke, it is the closest planet to earth, making the distance shorter than other planets. Scientists also believe that it could be possible that Venus was a lot like Earth at some point in time. While it may be hard to tell considering it's condition now, Venus has valleys, mountains, and craters. Although it's not certain, some believe that Venus once had oceans and could support some life forms.

While we hope the day won't come, there may be a time when Earth is no longer able to support life. Scientists study the planets in our system not only to fulfill their own curiositys, but to collect information for the day that it may be needed.

Score: 2