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Astronomical data shows that the Milky Way experiences about three supernovas each century.
Supernova, Definition, Types, & Facts
What Are Type 1A Supernovae? - WorldAtlas
What Is a Supernova?
What is a supernova? - Space Center Houston
What Is a Supernova? NASA Space Place – NASA Science for Kids
What is a supernova? - Space Center Houston
Supernovae Information and Facts
Where the shadows lie
Could we survive if the sun suddenly disappeared and was replaced by a supernova in our solar system? - Quora
Scandinavian Peninsula Norway, Map, Scandinavian
What is a supernova? - Space Center Houston
What is a supernova? - Space Center Houston
The increasing effects of light pollution on professional and amateur astronomy
Faces from Earth