What do we know about the mysterious dark energy and dark matter?

AI Thread Summary
Dark energy and dark matter remain largely mysterious, with ongoing discussions about their fundamental nature and composition. Current theories suggest that dark matter could be composed of unknown particles, while dark energy is often linked to the expansion of the universe. The relationship between these "dark" entities and conventional energy and matter is still unclear, raising questions about whether they are merely arbitrary terms. Evidence supports the idea that dark energy and dark matter are distinct phenomena, although their "darkness" may imply shared characteristics. Additionally, the connection between dark matter, dark energy, and black holes is a topic of interest, as black holes also represent a form of darkness in the universe.
jhe1984
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I apologize in advance if this is the wrong forum for this thread...

My overall question is:

What specifics, if any, do we know about the "dark" stuff - ie dark energy and dark matter?

Specifically:

Do we know anything about what the darkstuffs are made of (either experimentally or through well-reasoned theories)??

Are the terms "energy" and "matter" related in any way to the energy and matter that we experience - or are they simply arbitrary descriptors?

How do we know that dark energy and dark matter are two separate entities - and furthermore, is their "darkness" necessarily the same: as in dark energy and dark matter occupy the same dark dimension?

Does either darkstuff have any relation to black holes, which I presume are dark in their own way??

Thanks in advance!

:biggrin:

PS - Props to those in charge: I really dig these forums!
 
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