We present an analysis of the papers published in the journals Nature and Science in the years from 2006 to 2010. During this period, 7788 papers in total were published in the two journals. This includes 544 astronomy papers that correspond to 7.0% of the papers in 'all' research fields and 18.9% of those in the field of 'physical sciences'. The sub-fields of research of the astronomy papers are distributed, in a descending order of the number of papers, in Solar System, stellar astronomy, galaxies and the universe, the Milky Way Galaxy, and exoplanets. The observational facilities used for the studies are mainly ground-based telescopes (31.1%), spacecrafts (27.0%), and space telescopes (22.8%), while 16.0% of papers did not use any noticeable facilities and 1.7% used other facilities. Korean scientists have published 86 papers (33 in Nature and 53 in Science), which is 1.10% of all the papers (N = 7788) in the two journals. The share of papers by Korean astronomers among the scientific papers by Koreans is 8.14%, slightly higher than the contribution of astronomy papers (7.0%) in both journals.

ABSTRACT
1. INTRODUCTION
2. DATA
3. RESULTS
    3.1. Number of Papers
    3.2. Sub-fields in Astronomy
    3.3. Facilities for Astronomy Papers
    3.4. Papers by Koreans
4. SUMMARY AND DISCUSSION
REFERENCES

• SANG CHUL KIM(Korea Astronomy and Space Science Institute)
• SEUNG-LEE KIM(Korea Astronomy and Space Science Institute)
• JAEMANN KYEONG(Korea Astronomy and Space Science Institute)
• JAE WOO LEE(Korea Astronomy and Space Science Institute)
• WANGGI LIM(Korea Astronomy and Space Science Institute)
• SUNG HYUN JEON(Korea Astronomy and Space Science Institute, Department of Astronomy and Space Science, Chungnam National University)