I concur with Dave that one or two studies can't invalidate a line of thinking established my many independent lines of study. In reading the ABC article I was impressed by the following summation:
Professor Charlie Lineweaver, a cosmologist from the Australian National University, wrote "There are five ways to determine how fast the universe's expansion rate is accelerating." . . . "Schmidt used supernovae, which is still the most accurate method. There's also baryonic acoustic oscillations which are density waves that propagate through the universe, there's the cosmic microwave background radiation and you can also count the numbers of star clusters at given distances."
Understood, but the reference to baryonic acoustic oscillations is a new one on me. Can anyone shed light (so to speak)?
Is the term related to the following which appeared in Swinburne Magazine December 2011 Issue
http://www.swinburne.edu.au/magazine...-dark-mystery/
Getting the universe’s measure:
"To assess the distances between galaxies as they move further apart, the team took advantage of the known ‘preference’ of galaxies to operate in pairs about 490 million light years distant from one another. This provides a useful ruler for comparing other cosmic distances."
This also was a new one on me. Help, anyone?
Dana, Weltevreden SA