News for hackers. Stuff that matters.

A comment on Supernova’s messy birth casts doubt on reliability of astronomical yardstick. Parent comment

Re:Supernova’s messy birth casts doubt on reliability of ast... by carljoseph on Sunday August 20, 2017 @10:55PM (#15061602)
It's essentially built up of a chain or ladder. From parallax measurements to cepheid variables to supernova. This might give a good introduction http://www.iop.org/resources/topic/archive/cosmic/
[ Parent | on HN ]

There are no comments on this comment yet.