Saturday, June 14, 2025

Merger Uncertainty

"If you had asked any informed astronomer about the fate of our galaxy here in the 21st century, you would have gotten a near-universal story from practically all of them: in about four billion years, the Milky Way would merge with the only galaxy larger than itself in the entire Local Group, Andromeda. Andromeda holds the distinction of being the very first object correctly identified as being outside the Milky Way itself: when Edwin Hubble identified and measured a special class of star (Cepheid variable stars) in Andromeda back in 1923."https://bigthink.com/starts-with-a-bang/milky-way-andromeda-merger-uncertain/?utm_source=substack&utm_medium=email&utm_campaign=swab

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