[Light Propulsion]

I agree with the previous posts, but what about also using it as a form of transport like the streetcars in San-francisco? you could have two base stations where passengers get on and off, the base stations then fire them into space and to another planet, the base station there uses another laser to slow them down and eventually stop, passengers get off, rinse, and repeat.

[Some thoughts on stealth ships..]

I am not saying that we cant use stealth technologies, I had meant for this to benefit ships that were not designed completely for stealth.

 

An example of this would be a trader being chased by pirates, he gains a lead and hides behind the nearest moon and cuts his engines and nonessential systems. The pirates meanwhile, have lost him and are on the other side of the moon, even though they are scanning they cannot see where the trader went because the moon has absorbed too much of the different forms of radiation from the trader's ship and eventually give up and leave.

 

while technological stealth is something that I agree with, I do not feel that that should be the only way to hide

[Some thoughts on stealth ships..]

Space is not absolute zero, absolute zero is the temperature that all atomic movement stops (Third law of thermodynamics since you seem to like them so much) and is impossible due to quantum mechanics (Heisenberg uncertainty principle).

 

Also, since space is the closest natural approximation of a vacuum (due to no vacuum being perfect) heat would have an incredibly difficult time travelling through convection, conduction, or advection, and would travel mostly through radiation which would make it incredibly difficult to travel entirely through a moon and get to wherever the ship searching for the ship hiding is and then have them figure out it is a ship and not radiation from the moon itself. Also, if the ship hiding turned off unimportant heat generating machines, he would be even more concealed! All he would have to do after that is turn off active sensors and communication! In conclusion, Heat stealth is completely possible.

 

(Also on the whole super-glass thing you could probably use some form of light sensor considering it would be quite useful)

[Some thoughts on stealth ships..]

Just adding another thought to this, what if you did not have to necessarily equip your ship entirely for stealth and instead were able to hide it behind something like a moon? Theoretically you could hide some signals (like radar and visual) from the enemy by just hiding behind a large enough object and turning off your engines and radio equipment or having active or passive shielding on them. I was thinking of something like season 8 episode 2 of doctor who where the ship the episode takes place on is hidden in the asteroid belt (they say shielded but it seems to be blocking visual since you can see them). That is just my thoughts though.