Rate the following argument fragment on its writing, argument, and language skills:
Evidence: venus is the closet planet to earth and also has the hottest surface temperatue of any planet in our solar system . '' astronomers are fascinated by venus because it may well once have been the most earth-like planet in our solar system '' this shows that venus is a likely planet. There are numerous factors contribute to venus's reputation as a challenging planet for human to study , However NASA is working on other ways to study venus . ''Many researchers are working on innovations that would allow our machines to last long enough to contribute meaningfully to out knowledge of venus ''

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