https://www.scitw.cc/posts/The-Cosmic-Surprise-en
“What got physicists into physics usually is not the desire to understand what we already know,” Perlmutter told me years ago, “but the desire to catch the universe in the act of doing really bizarre things. We love the fact that our ordinary intuitions about the world can be fooled.”
“I’m very glad I said that,” he says now when I remind him of that quote, “because that does feel so much like what I see all around me.” Still, referring to the progress (or lack thereof), he says, “It’s been slow.” He laughs. “It’s nice to have mystery, but it would be nice to have just a little bit more coming from either the experimental side or the theoretical side.”
See also
https://www.space.com/dark-energy-remains-elusive-25-years-after-discovery
https://www.space.com/desi-cosmological-constant-dark-energy-history
https://www.nationalgeographic.com/science/article/origins-of-the-universe
https://www.amazon.com/4-Percent-Universe-Matter-Discover-Reality/dp/0618982442