The author supports the idea that studying Venus is a worthy pursuit despite the dangers it presents by saying the astronomers are fascinated by Venus, NASA working on a way to approach Venus.

The author supports the idea that studying Venus is a worthy pursuit despite the dangers by saying the astronomers are fascinated by Venus. In the article it says "Astronomers are fascinated by Venus because it may well once have been the most Earth-like planet in our solar system." This shows that it's worth pursuing because astronomers find it fascinating.

The author supports the idea that studying Venus is a worthy pursuit despite the dangers it presents by saying that NASA is working on a way to approach Venus. In the article it says "NASA is working on other approaches to studying Venus. For example, some simplified electronics made of silicon carbide have been tested in a chamber simulating the chaos of Venus's surface and have tested for three weeks in such conditions." This shows that NASA is working on a way to approach Venus.

The astronomers are fascinated by Venus,NASA working on a way to approach Venus is how the author supports the idea that studying Venus is a worthy pursuit despite the dangers it presents.