Koguryo is the first feudal state which existed in the Korean history between 277 B.C. and A.D. 668.
Astronomy developed considerably in Koguryo at that time.
Doctor Kim In Chol, Section Chief of the Archaeological Institute under the Academy of Social Sciences, has this to say.
"The high development of astronomy in Koguryo is unthinkable apart from the Chomsongdae Observatory, the base for observing the sun, moon and stars, and the centralistic and systematic observation of the state. Koguryo built the Chomsongdae Observatory for astronomical observations and the officials in charge of the astronomical observations made observations day and night in all seasons.
Such historical fact is proved well through the site of the Chomsongdae Observatory unearthed around the Anhak Palace, the royal palace at the time of the Koguryo Dynasty."
The site of the Chomsongdae Observatory of Koguryo is in today's Taesong District of Pyongyang City.
It covers a wide area of about 380 square metres. Most of the superstructure was destroyed not to recognize its shape, but the substructures are preserved comparatively as they were.
The site of the Chomsongdae Observatory of Koguryo largely consists of the tetragonal main facility and the heptagonal auxiliary facility around it.
The foundation is about 1.3 metres deep, which is the deepest of the medieval structures unearthed so far. It is solid enough to support about 1,000 tons of weight from an architectural point of view.
Imagining the superstructure on the basis of the archaeological materials on the site, it is possible to guess that a stone structure for astronomical observations existed there.
The fact that there is the Pyongyang Observatory on the ridge opposite the site shows that the place is very favourable for astronomical observations.
The site of the Chomsongdae Observatory of Koguryo built in the first half of the 5th century is of great significance in showing the high development of astronomy in Koguryo.
More From Voice of Korea (EN)
Doctor is a job earning the people's respect because he or she relieves them of their pain and recovers their health. Kim Ryo Sun,
December 03, 2025
Doctor is a job earning the people's respect because he or she relieves them of their pain and recovers their health. Kim Ryo Sun,
Protecting the national cultural heritage associated with the talents and wisdom of the nation and the excellent national
December 03, 2025
Protecting the national cultural heritage associated with the talents and wisdom of the nation and the excellent national
A meeting was held at the Mangyongdae Schoolchildren's Palace on November 30 to commemorate the 10th anniversary of the respected
December 03, 2025
A meeting was held at the Mangyongdae Schoolchildren's Palace on November 30 to commemorate the 10th anniversary of the respected
Pak Thae Song, Premier of the Cabinet of the Democratic People's Republic of Korea, sent a message of greetings to the Lao Prime
December 03, 2025
Pak Thae Song, Premier of the Cabinet of the Democratic People's Republic of Korea, sent a message of greetings to the Lao Prime
Choe Son Hui, Minister of Foreign Affairs of the Democratic People's Republic of Korea, sent a message of greetings to Lao Foreign
December 03, 2025
Choe Son Hui, Minister of Foreign Affairs of the Democratic People's Republic of Korea, sent a message of greetings to Lao Foreign
Modern rural houses have been built in Kumbu-ri of Sakju County and Tanghu-ri of Phihyon County of North Phyongan Province.
December 03, 2025
Modern rural houses have been built in Kumbu-ri of Sakju County and Tanghu-ri of Phihyon County of North Phyongan Province.
The 2025--2026 DPRK Men's and Women's Premier Football Leagues began in the Democratic People's Republic of Korea. They will bring
December 03, 2025
The 2025--2026 DPRK Men's and Women's Premier Football Leagues began in the Democratic People's Republic of Korea. They will bring
The construction of regional-industry factories in 20 cities and counties planned this year is promoted at the final stage. Thanks
December 03, 2025
The construction of regional-industry factories in 20 cities and counties planned this year is promoted at the final stage. Thanks
The Sunchon Catfish Farm is one of the leading catfish farms in the Democratic People's Republic of Korea. The respected Comrade
December 03, 2025
The Sunchon Catfish Farm is one of the leading catfish farms in the Democratic People's Republic of Korea. The respected Comrade
There is the Ryugyong Dental Hospital in the capital city of Pyongyang. The respected Comrade Kim Jong Un conceived a plan to
December 03, 2025
There is the Ryugyong Dental Hospital in the capital city of Pyongyang. The respected Comrade Kim Jong Un conceived a plan to
One day in February 2015, the respected Comrade Kim Jong Un visited the Pyongyang Cosmetics Factory. Looking round different
December 02, 2025
One day in February 2015, the respected Comrade Kim Jong Un visited the Pyongyang Cosmetics Factory. Looking round different
Pak Thae Song, Member of the Presidium of the Political Bureau of the Central Committee of the Workers' Party of Korea and Premier
December 02, 2025
Pak Thae Song, Member of the Presidium of the Political Bureau of the Central Committee of the Workers' Party of Korea and Premier
The Central Committee of the Workers' Party of Korea sent a congratulatory message to the General Council of the United Russia
December 02, 2025
The Central Committee of the Workers' Party of Korea sent a congratulatory message to the General Council of the United Russia
The Lao embassy in the Democratic People's Republic of Korea gave a reception at the Taedonggang Diplomatic Club on December 1 on
December 02, 2025
The Lao embassy in the Democratic People's Republic of Korea gave a reception at the Taedonggang Diplomatic Club on December 1 on
New houses were built at the Township Farm in Hochon County of South Hamgyong Province and the Insan Farm in Rangnim County of
December 02, 2025
New houses were built at the Township Farm in Hochon County of South Hamgyong Province and the Insan Farm in Rangnim County of
There is the Medical Oxygen Factory on the outskirts of Pyongyang, the capital of the Democratic People's Republic of Korea. One
December 02, 2025
There is the Medical Oxygen Factory on the outskirts of Pyongyang, the capital of the Democratic People's Republic of Korea. One
Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the Democratic People's
December 02, 2025
Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the Democratic People's
Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the Democratic People's
December 02, 2025
Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the Democratic People's
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
December 02, 2025
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
December 02, 2025
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
More Articles
