A New Study Suggests How we Could Find Advanced Civilizations that Ran Out of Fusion Fuel - Universe Today,First co-orbiting exoplanet hints at our Moon's origin | by Ethan Siegel | Starts With A Bang! | Medium,プレスリリース - 観測史上最古、124億年前の宇宙に渦巻き構造を持つ銀河を発見 - アルマ望遠鏡,A New Study Suggests How we Could Find Advanced Civilizations that Ran Out of Fusion Fuel - Universe Today,First co-orbiting exoplanet hints at our Moon's origin | by Ethan Siegel | Starts With A Bang! | Medium