Do the Vedas mention Yugas?
Yes, RigVeda mentions about 'yuga' starting with the 'asat yuga' from which deva brought forth the 'sat yuga'.
Ref. RV. 10.72 (2) - ' devana purvye yuge asat sat jayat'.
And RigVeda can tell us what preceded it not of forthcoming as done by some of the finalist scriptures which tell us that 'kali yuga' is the last one and 'sat yuga' will follow it.
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