[muir_redwoods]

"Sterilization occurs on a planet that is roughly [at a distance] between 6.5 to 98 light years, depending on the supernovae," says Gowanlock. "In our model, the sterilization distances are not equal, as some supernovae are more lethal than others."

So, a planet closer than 6.5 light years to a supernova is somehow spared from sterilization? Why?

[Windflier]

So, a planet closer than 6.5 light years to a supernova is somehow spared from sterilization? Why?

Planets closer than 6.5 light years to a supernova are probably annihilated.