South Korea's air and ocean monitoring satellite, Chollian-2B, is officially ready to launch.
It will be launched from French Guiana at 7:18 AM on Wednesday, Korean time.
Chollian-2B is the world's first geostationary satellite for environmental observation.
The satellite will monitor twenty different types of air pollutants, such as fine dust and ozone, from 36-thousand kilometers above the Earth.
It'll send real-time data on ocean conditions starting in October and atmospheric information starting sometime next year.