The universe is made up of a few things. First, 30% of it is matter, but the majority of that, about 80% is dark matter that we can’t see. Only a small fraction of that mass is made up of stuff like atoms and molecules that we can actually study and see.
The other 70% is dark energy, which is a mysterious force which makes the universe not only expand but to also accelerate – i.e., it gets faster and faster with expansion. We have no idea what this is, but it is probably just a property of space that makes everything expand.
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Sharmin_the BEST commented on :
Thanks!!!