About TAKAHASHI TADAYUKI
About 宇宙航空研究開発機構 宇宙科研
About NAKAZAWA KAZUHIRO
About 東大 大学院理学系研究科
About scientific satellite
About X-ray astronomy
About gamma-ray astronomy
About radiation detector
About black hole
About cluster of galaxies
About astronomical satellite
About neutron star
About evolution of the universe
About interstellar matter
About element
About nucleosynthesis
About X-ray detector
About ASTRO-H
About X-ray detector
About heavy elements
About Astronomy and astrophysics in general
About Cosmic ray and astrophysical observing technology
About Nebulae
About Fixed stars
About X線
About γ線
About 宇宙
About 進化