 A new NASA satellite known as PACE is now collecting and beaming back vital insights on the health of our planet. The PACE mission launched in February of 2024 and is designed to gather data about Earth's oceans and atmosphere. From an orbit 400 miles up, the sophisticated instruments on this spacecraft can even see microscopic phytoplankton and aerosols. That gives scientists a detailed view of harmful algal blooms and air pollution in real time.