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)
The Missile Administration of the Democratic People's Republic of Korea made a test fire for verifying the effect of the updated
January 28, 2026
The Missile Administration of the Democratic People's Republic of Korea made a test fire for verifying the effect of the updated
The respected Comrade Kim Jong Un always stresses the need to do everything in Korean style according to the aesthetic sense of
January 27, 2026
The respected Comrade Kim Jong Un always stresses the need to do everything in Korean style according to the aesthetic sense of
The Indian embassy in the Democratic People's Republic of Korea gave a reception at the Taedonggang Diplomatic Club on the 26th on
January 27, 2026
The Indian embassy in the Democratic People's Republic of Korea gave a reception at the Taedonggang Diplomatic Club on the 26th on
The machine-building industry sector is making successes by concentrating efforts on strengthening the foundations of production.
January 27, 2026
The machine-building industry sector is making successes by concentrating efforts on strengthening the foundations of production.
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea, sent a congratulatory message to To Lam,
January 26, 2026
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea, sent a congratulatory message to To Lam,
The respected Marshal Kim Jong Un received a letter on the 21st from the participants in the meeting to hear a report from the
January 26, 2026
The respected Marshal Kim Jong Un received a letter on the 21st from the participants in the meeting to hear a report from the
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
January 26, 2026
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
New modern houses were built in mountain villages in Jagang Province. People moved into new houses built in Puji-ri of Songgan
January 26, 2026
New modern houses were built in mountain villages in Jagang Province. People moved into new houses built in Puji-ri of Songgan
The Movement to Win the Title of Model Technical Innovation Unit is active in all fields of the national economy of the Democratic
January 26, 2026
The Movement to Win the Title of Model Technical Innovation Unit is active in all fields of the national economy of the Democratic
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
January 26, 2026
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
The Farm Machine Research Institute was wonderfully completed as a centre which will powerfully lead the comprehensive
January 25, 2026
The Farm Machine Research Institute was wonderfully completed as a centre which will powerfully lead the comprehensive
Teachers' in-service training centres in Pyongyang are directing efforts to improving the qualifications of teachers. Officials of
January 25, 2026
Teachers' in-service training centres in Pyongyang are directing efforts to improving the qualifications of teachers. Officials of
The Kwanphung Farm in the city of Munchon and the Mabang and Majang farms in Cholwon County of Kangwon Province have been
January 25, 2026
The Kwanphung Farm in the city of Munchon and the Mabang and Majang farms in Cholwon County of Kangwon Province have been
A meeting was held at the Korean Hall in Tokyo of Japan on the 21st to hear a report from the 35th art troupe of Korean
January 25, 2026
A meeting was held at the Korean Hall in Tokyo of Japan on the 21st to hear a report from the 35th art troupe of Korean
The Workers' Party of Korea always pays deep attention to the work with the masses. The respected Comrade Kim Jong Un, General
January 25, 2026
The Workers' Party of Korea always pays deep attention to the work with the masses. The respected Comrade Kim Jong Un, General
Successes were made at Kim Il Sung University and scientific research institutions. The Faculty of Chemistry of Kim Il Sung
January 25, 2026
Successes were made at Kim Il Sung University and scientific research institutions. The Faculty of Chemistry of Kim Il Sung
North Hwanghae Province is putting spurs to repairing and maintaining farm machines. The Sariwon Tractor Parts Factory is turning
January 24, 2026
North Hwanghae Province is putting spurs to repairing and maintaining farm machines. The Sariwon Tractor Parts Factory is turning
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
January 24, 2026
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
Socialist utopias showing the rural civilization of Korean style were built at the Chonnisong Farm in Taehung County, and the
January 24, 2026
Socialist utopias showing the rural civilization of Korean style were built at the Chonnisong Farm in Taehung County, and the
The revolutionary advance of the whole Party, the entire people and all the army toward the historic Ninth Congress of the
January 24, 2026
The revolutionary advance of the whole Party, the entire people and all the army toward the historic Ninth Congress of the
More Articles
