@prince5005 Well yes. Basically we had a mystery for over 20 years and the explanation turns out to be that what we thought were "standard units" for measuring distance, were actually kinda flexible and bendy.
Type Ia supernovae are not all the same.
Older events were from less metal rich stars and thus their light curves were actually much different. So knowing that and going back over the data, we find that the dark energy, accelerating universe theory is not as well supported as we thought at all.
It's a bit like measuring the distance between markers on the highway and later finding that the rope you're using to measure those distances is actually made of rubber.
@prince5005 Well yes. Basically we had a mystery for over 20 years and the explanation turns out to be that what we thought were "standard units" for measuring distance, were actually kinda flexible and bendy.
Type Ia supernovae are not all the same.
Older events were from less metal rich stars and thus their light curves were actually much different. So knowing that and going back over the data, we find that the dark energy, accelerating universe theory is not as well supported as we thought at all.
It's a bit like measuring the distance between markers on the highway and later finding that the rope you're using to measure those distances is actually made of rubber.