Could a supernova ever destroy Earth?

[Admin]

When stars explode as supernovas, they can cause serious cosmic carnage. Is Earth in any danger from any nearby stars?

Could a supernova ever destroy Earth? : Read more

 

[Unclear Engineer]

This article says:
"our solar system is just now entering the Orion spiral arm of the Milky Way, . . . the 10 million years it will take us to cross the arm."

That seems to imply that the arm is not orbiting the center of our galaxy at the same speed as our Sun is moving.

A discussion of how that might occur is here: http://burro.cwru.edu/academics/Astr222/Galaxies/Spiral/spiral.html