Dark energy could be getting weaker, suggesting the universe will end in a 'Big Crunch' 

 The first year of Dark Energy Spectroscopic Instrument (DESI) data seems to show that dark energy is weakening over time, possibly the biggest cosmological discovery for 25 years. 

https://cdn.mos.cms.futurecdn.net/q5gWeFvQRDqThzoaNwaXSg.png

https://www.space.com/desi-cosmological-constant-dark-energy-history