3w ago

Shine a laser on the moon

21 comments

This hit especially well given that our kitties are afraid of the handheld vac. Interestingly, we just got a robo-vac and they aren't afraid of it. They watch it and one followed it to observe. I guess they can go to space if space is a robot.
Space isn't really a vacuum. There's plenty of stuff drifting around, just that most of it isn't all that helpful to our wellbeing.
- Space isn't really a vacuum
  Wait what?
  Space is a vacuum.
  Could argue it's not a perfect vacuum. We haven't created a perfect vacuum on Earth but we have come close.
  If I have a container and remove all the air inside. I have created a vacuum. Not a perfect one, but a simple vacuum.
  If I add rocks to the container. The rocks are now in a vacuum.
  Just like space. Space is a vacuum and there is "rocks" in it.
  
  Yeah, but it's not just "rocks" in space, it's everything. Or what we consider as such.
  If you see light from distant stars, doesn't it mean there's radiation from there to here? There's lots of stuff in space, you just don't see it as noteworthy.
- I mean, on average space is empty
  
  That's not how average works
Did somebody say... laser moon?
https://www.youtube.com/watch?v=Lu9dUG3_KNA

21 comments