Behind any astronomical exploration project is a complex system engineering, which requires the cooperation of multidisciplinary scientists. It not only promotes the progress of basic theory, but also plays a considerable role in promoting many important application technologies, reflecting the level of engineering technology and technology. Therefore, when people look at a space exploration project, they should also look at it from a grand and systematic perspective, rather than simply looking at immediate interests. In fact, many exploration projects currently under way are not "wasting people's money" and spending money like water, but fully consider the concept of efficiency and the financial capacity of various countries. The whole "Stardust" project only costs more than 200 million US dollars, and the total budget of the "New Vision" plan is strictly controlled within 488 million US dollars, including the reserve budget of 80 million US dollars.

Space exploration has been the greatest dream of mankind since ancient times. Here, we hope that the "New Vision" can set off as scheduled, and wish the "travelers" who are getting farther and farther away from us a pleasant journey.

Positive aspects: develop some products that can only be produced in special space environment, such as "foam steel"; Better respond to natural disasters; Satellite communication; Ground remote sensing; Prepare for future immigration and space development, and make use of the special environment of space to carry out scientific research that cannot be carried out on earth;

Negative aspects: too much capital investment, easy to pollute the space environment and so on.