COSMIC-2 also known as FORMOSAT-7, is the constellation of satellites for meteorology, ionosphere, climatology, and space weather research. FORMOSAT-7 is a joint US-Taiwanese project including National Space Organization (NSPO) on the Taiwanese side and the National Oceanic and Atmospheric Administration (NOAA) and the United States Air Force (USAF) on the US side. FORMOSAT-7 is the successor of FORMOSAT-3 The six satellites of the constellation were launched 25 June 2019 on a Falcon Heavy rocket. They reached their designated mission orbits in February 2021, after eighteen months of gradual orbital adjustments. Full operational capability was achieved in October 2021.

On the morning of 14 April 2019, President Tsai Ing-wen traveled to Hsinchu City to take part in send-off activities for the Formosat-7 satellite. She commended the hard work and accomplishments of the research and development team, and hailed Formosat-7 as a milestone in promoting Taiwan's technological diplomacy, noting that she expected the satellite would display "the brilliance of Taiwan's aerospace technology on the international stage".

On 15 April, the satellites were placed aboard a Taiwanese China Airlines cargo plane at Taoyuan International Airport. The six satellites were packed in three climate controlled transport crates. The satellites were shipped as diplomatic pouch to speed their journey through US customs, the first time a satellite had been shipped as such.

78% of components for the satellites were made in Taiwan. The satellites receive signals from both GPS and GLONASS. The constellation collects more than 4,000 pieces of data a day.

The primary payload for the COSMIC-2 satellites is the Radio Occultation instrument.

This instrument is capable of measuring atmospheric effects by analyzing the propagation of GNSS signals through said atmosphere.

The instrument is composed of the Tri-band GNSS (TriG) RO and POD Receiver and four Antennas:

Each RO Antenna is composed of three vertical sub-arrays, four elements each.