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According to the article, supernovas occur more frequently in younger galaxies, and we know these can blow a star's heliosphere away temporarily exposing all it
by cjfont 11y ago
According to the article, supernovas occur more frequently in younger galaxies, and we know these can blow a star's heliosphere away temporarily exposing all its planets to deadly radiation (which it seems has happened to Earth before).
- schwarrrtz 11y agoAlso, stars that are large enough to experience a supernova have shorter lifespans than our Sun, giving less time for life to develop.