Let me try again. The light ring is a reflection off of gas that lies
between the earth and the supernova.
dust
light travels / \then reflects back to earth
to dust / \
/ \
/ \
star----light travels to earth directly-------->earth
The distance from the star to the earth is 169,000 light years. The
diameter of the ring is 400 light years, giving a 200 lightyear radius.
Pythagorean theorem tells us that the travel path of the light from the
star to the dust then to the earth is
d
/|\
a / | \ b
/ 200 \
/ | \
s--169000--e
to find the travel distance for side a we have
a=sqrt[(169000/2)^2 +(200)^2] =84500.2366
b=sqrt[(169000/2)^2 +(200)^2] =84500.2366
The total travel path from the star to the dust to the earth is:
169,000.47 lightyers compared with the 169,000 lightyears direct distance.
With the ring as I drew it, the reflected light from the ring should get
here about 6 months after the light from the initial explosion.
The inner ring is at the star, not at the dust.
Does this help?
glenn
Adam, Apes and Anthropology
Foundation, Fall and Flood
& lots of creation/evolution information
http://www.isource.net/~grmorton/dmd.htm