In 2013, a city science and technology museum sold a total of 30,000 tickets  In 2014, the city's new planetarium and nature museum opened, and a total of 95000 tickets were sold at the three venues that year
Planetariums and nature museums usually attract a large number of visitors in their first year of opening
 This shows that the investment in building planetariums and nature museums is worthwhile, because the number of people who go to these venues to receive popular science education has more than tripled