In a message dated 96-09-01 01:46:15 EDT, you write:

<< What about when Souja blew up in the OAV series.  how did everyone survive
 that. and when Ryoohki collided with Sasami's ship <not Tsunami>.   People
 can live in the space in Tenchi Muyou universe <as what I've seen>, they
 don't suffer from decompression or lack of oxygen in space,  
  >>

Ho Joon, you KNOW the anime laws of physics: 
i.e . inspace theres no air to get in the way so sound travels farther and
louder, etc.