https://kosmophysis.org A personal astronomical atlas — short cards on objects, phenomena, and concepts of the sky. en Wed, 06 May 2026 22:05:37 GMT https://kosmophysis.org/card/the-andromeda-galaxy https://kosmophysis.org/card/the-andromeda-galaxy Two and a half million light-years away, a spiral galaxy roughly twice the mass of our own is falling toward us at 110 kilometers per second. We call it Andromeda. In about four billion years, it will not be "away" anymore. Wed, 06 May 2026 22:05:37 GMT https://kosmophysis.org/card/artemis-ii https://kosmophysis.org/card/artemis-ii On April 1, 2026, four astronauts left Earth aboard NASA's Orion spacecraft, looped behind the far side of the Moon, and came back. No one had been that close to the Moon since 1972. No one had ever been that far from home. Wed, 06 May 2026 22:02:14 GMT