File talk:Hubble constant.JPG
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[编辑]km/s measures recessional velocity, not redshift. Pedantic, yes, but an important distinction. DenebVegaAltair (留言) 18:05, 25 May 2021 (UTC)
km/s measures recessional velocity, not redshift. Pedantic, yes, but an important distinction. DenebVegaAltair (留言) 18:05, 25 May 2021 (UTC)[回复]