Korea Astronomy and Space Science Institute (KASI) is a partner institute of the Giant Magellan Telescope (GMT) consortium, together with institutes in USA, Australia, and Brazil, to construct an extremely large telescope, and Korean Giant Magellan Telescope (K-GMT) is a Korean project to take part in the construction of GMT, development of state-of-art instruments, and preparation of GMT sciences.

The Korean VLBI Network (KVN) is a very long baseline interferometry (VLBI) network in Korea operating at millimeter wavelengths. It consists of three 21-m radio telescopes located in Seoul, in Ulsan, and on the Jeju Island, Korea: KVN Yonsei Radio Observatory (KY), KVN Ulsan Radio Observatory (KU), and KVN Tamna Radio Observatory (KT).

The Atacama Large Millimeter Array (ALMA) is a partnership among East Asia, Europe, and North America in cooperation with the Republic of Chile. ALMA construction and operation are led on behalf of Europe by the European Organization for Astronomical Research in the Southern Hemisphere (ESO).

KASI has developed its first satellite laser ranging (SLR) system, ARGO-M, which is now in normal operation at KASI headquarters, and received the station code DAEK from the International Laser Ranging Service in 2012. Thus, Korea now joins 25 countries that operate SLR systems in support of the international laser tracking network.

KASI is building a network of wide-field photometric survey systems called the Korea Microlensing Telescope Network (KMTNet) in the southern hemisphere (Chile, South Africa, and Australia). This network is funded by the government of Korea.

Space weather is the condition in space that affects Earth and its technological systems. Our space weather is a consequence of the behavior of the Sun, the nature of Earth's magnetic field, and our location in the solar system.