Most likely (as in, very most likely) not bad [1], though it's theorized that the second largest mass extinction event on Earth may have been due to a GRB [2].

Most likely (as in, very most likely) not bad [1], though it's theorized that the second largest mass extinction event on Earth may have been due to a GRB [2]. [1] https://en.wikipedia.org/wiki/Gamma-ray_burst#Rate_of_occurrence_and_potential_effects_on_life https://en.wikipedia.org/wiki/Gamma-ray_burst#Rate_of_occurr... [2] https://en.wikipedia.org/wiki/Ordovician%E2%80%93Silurian_extinction_events https://en.wikipedia.org/wiki/Ordovician%E2%80%93Silurian_ex...