[Lunar Craters—a Failed Theory (2) The Puzzles of Aristarchus 月のクレーター―失敗した理論（2） アリスタルコスのパズル] Two prominent craters on the Moon appear in this photograph taken from orbit during the Apollo 15 mission. The large bri…

[A Radio Message from Space 宇宙からのラジオメッセージ] Two views of Galaxy 0313-192, both involving radio images from the Very Large Array superimposed on images recorded by the Hubble Space Telescope. ハッブル宇宙望遠鏡によって記録された…

[Lunar Craters—a Failed Theory 月のクレーター—失敗した理論] Of all the features on the lunar landscape that are commonly identified as “impact craters”, the most prominent is the crater Tycho in the Southern hemisphere. 一般に「衝突クレー…