Type1a supernovae as evidence for an accelerating universe

[supernovae]

hi i just wanted to ask if someone could explain this graph for me

http://hyperphysics.phy-astr.gsu.edu/hbase/astro/univacc.html

thank you

 

[stevebd1]

I've posted a blog relating to type 1a supernovae and the accelerating cosmos-

https://www.physicsforums.com/blog.php?b=166

While it doesn't explain the diagram directly, it might go towards helping you understand it better.

Steve