Self-study
The supernova event of 1987 is interesting in that Support there is still no evidence of the neutron star that current theory says should have remained after a supernova of that size. ████ ██ ██ █████ ██ ███ ████ ████ ████ ██ ███ ████ █████████ ███████████ ████ █████████ ████ ████████ ███ ███ █████████ █████ ██ █████████ ████ ███████ █████ █████ █████ ███████ ██████ ██ █████ ██ ████████ ████ ██████████ ██ █ ███████ ████ ██████ ███████ ███████ ██████
Summarize Argument
The author concludes that current theory is wrong to claim that supernovas of certain sizes always produce neutron stars. This is because the supernova event of 1987 was of adequate size to produce a neutron star, but searches with very sensitive instruments have produced no evidence of a neutron star.
Notable Assumptions
The author assumes that because no evidence has been found yet, no neutron star exists. In other words, the author assumes that if a neutron star was produced, the searches conducted so far would have found it.
Analysis by AlexandraNash
24.
Which one of the following, ██ █████ ████ ███████████ ███ █████████
a
Most supernova remnants ████ ███████████ ████ ████████ ████ █ ███████ ████ ███████
b
Sensitive astronomical instruments ████ ████████ ███████ █████ ████ ███████ ████ ████ ███ ████████ ██ ███ ████ ██████████
c
The supernova of ████ ███ ███ █████ ████ ██████████ ████ ████ ██ ███████ ██ █████████
d
Several important features ██ ███ ████ █████████ ███ █████████ █████████ ██ ███ ███████ ███████
e
Some neutron stars ███ █████ ██ ████ ████ ████ █████████ ██ █ █████ █████ ████ █ █████████ ██████████