Rate the following argument fragment on its writing, argument, and language skills:
Lead: Scientists and more specifically astronomers are extremley fascinated in Earth's sister planet, Venus, as it is similar to Earth in certain ways, and is a close enough distance for travel. Venus was believed to once be very similar to Earth in terms of its geology, so therefore scientists are interested in discovering how the features have changed. However, the author of "The Challenge Exploring Venus," explains the great dangers that the planet offers for both humans and technology to explore the planet. The act of returning to Venus seems impossible due to the risks, although the insight that is wanted to be gained on the planet could lead to "intimidating endeavors."

Score: 2