[ruchir]

Wealth is not fixed like energy. It can be created. Money can be used to create wealth when it is used to create new products for example. In this case you could argue there were no products in the traditional sense. But it got people's attention.

So a writer could write a sci-fi novel about mars and sell that to a ready audience.

An entrepreneur could create models of the planets and sell those to schools.

A movie maker could make a new movie with a space theme.

Not to mention actual technical innovations that could come out of new knowledge gained. Moreover, kids could be motivated to take up science and engineering for future jobs in 'STEM' fields. If this unlocks the imagination of even a few creative people, they could put back more than $100m of wealth into the economy.