sabine-hossenfelder 1 week ago
PhD in physics #Space and Time

Sabine | Latest Data Challenges 25 Years of Cosmology

There’s something crazy going on in the world of physics right now.

According to new data from the Dark Energy Spectroscopic Instrument (DESI), the cosmological constant might not actually be constant, rather, it is decreasing and had a “phantom crossing”.


What does that mean?


I have a quick summary of what's new.


Sabine Hossenfelder
PhD in physics