Post

I think it is rather remarkable that Einstein threw out the cosmological constant when the data didn't fit. How many scientists are willing to own up to a mistake?

You’re welcome!

Well written but still a li'le bit over my head. It gives a good look at the current cosmological state of play, covering where we're at with observations and resulting research. Will the Nancy Grace Roman Space Telescope help in this field?

This is so clear and explains all of this so well. I appreciate what you do!

So, are dark energy and dark matter the same thing, the opposite of each other, or merely different things? A non astrophysicist person inquires sincerely.

THANK YOU for sharing cool science with us here! Especially cool when it's YOUR cool science! :D

That was a bit, well a lot, beyond me. But I can’t help suspect that dark energy is a result of ‘spent’ time, like heat is a result of burning fuel. If energy is conserved, why not time?

Perhaps it will turn out like "luminiferous aether" and not exist.

I read the 'Dynamical Dark Energy at Late Time lambdaCDM' paper on arXiv after this! When you mention it potentially resolving this issue to 5 sigma, will Vera Rubin observe supernovae at lookback time of the paper's cited decel -> accel threshold at z ~ 0.7? (I start soon as an astro grad student)

There is actually somebody I've known personally for 35 years whom I can ask except that I wouldn't understand anything he told me.

Ooo yess

Thank you!

If you want to sign up for any of Perimeter's various newsletters, you can do so here: landing.perimeterinstitute.ca/newsletter-s.... The "Research Opportunities Radar" checkbox should get you the new one!

holy buckets, the context for that image is... a lot