Ron Shaneyfelt | TED-Ed
View full lesson: http://ed.ted.com/lessons/is-space-tr…
How likely is it that a massive asteroid will do major damage to Earth and its inhabitants?
What about the sun — is it dying out anytime soon? And the supermassive black hole at the center of the Milky Way — should we be worried about that?
Ron Shaneyfelt assesses the dangers of space.
Lesson by Ron Shaneyfelt.
Animation by Retchy.