Space is a vacuum, right?
Well, not exactly. It's all pretty empty on a cubic centimeter by cubic centimeter basis, but how empty is it?
Find out in this week's episode of Q & BA: I Am Your Density.
Watch it right here, right now!
The question was sent in by Walter L. Williams:
When we talk of the vacuum of space, is it a total vacuum or "pretty much" a vacuum? Could you elaborate, perhaps telling us how much matter might be in say a "liter of space"?
Images and Links
Barnard 68 is from the European Southern Observatory.
The marshmallow came from my baking drawer. When I was done, I ate it.