"Steve Willner" wrote in message ...

In article ,
dlzc writes:
Having Dark Energy as "stuff" (as opposed to the cosmological
constant) allows for it to be non-uniformly distributed in space
and time, subject to observational support of course.

Sorry to be slow getting back to this.

Dark matter is just matter. Its exact nature is unknown except that
most of it is non-baryonic.

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