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Apr 29 at 15:21 vote accept Rich Jensen
Apr 28 at 11:39 comment added Amazon Dies In Darkness The "Astronomy Picture of the Day" today sent me down a rabbit-hole. Occasionally, they intentionally send you down a black hole: apod.nasa.gov/apod/image/1410/bhlens_riazuelo_2560.jpg
Apr 28 at 10:52 answer added ProfRob timeline score: 16
Apr 28 at 0:10 history became hot network question
Apr 27 at 21:55 answer added 4NT4R3S timeline score: 5
Apr 27 at 19:17 comment added PM 2Ring ... and primordial helium.
Apr 27 at 18:46 comment added antlersoft Because the rate of star formation in dwarf galaxies is so low, there simply hasn't been time for many second- and third-generation stars, which have higher metallicity, to form. Almost all the stars were formed from the galaxies' initial complement of unadulterated primordial hydrogen.
S Apr 27 at 16:10 review First questions
Apr 28 at 1:40
S Apr 27 at 16:10 history asked Rich Jensen CC BY-SA 4.0