Voyager 1 is on a journey that will outlast civilizations, outlive the Sun’s familiar neighborhood, and eventually drift into ...

地球外文明を探し出す地球外知的生命体探査(SETI)は人類の夢ですが、高度な地球外文明は必ずしも人間のような方法でコミュニケーションしているとは限りません。2025年11月8日にプレプリントサーバーのarXivに掲載された論文では、「地球外文明はホタルの ...

“There is a silence in the night sky that has bothered me for as long as I can remember.” That line, attributed to Richard Feynman, lands because it gets at a simple, stubborn feeling. The sky looks ...

The Kardashev Scale is one of the most widely discussed scientific frameworks for measuring the technological advancement of civilizations, from planetary energy use to controlling entire galaxies.

There are many attempts to get humanity to be found by extraterrestrial civilization, such as the In considering how many hostile extraterrestrial civilizations are in the galaxy, Alberto Caballero, ...