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If I want to inflate a balloon in space, what materials should I be looking for as the balloon? My requirement is I use a cool gas generator for inflation...so I just need help finding an "off the shelf" inflatable balloon (don't worry that it needs a CGG) that is strong enough for space

So I'm working on this project for a inflatable solar sail (so a spherical solar sail) and we are really only verifying the deployment of the sail in space (from a cubesat)...We are doing a mock PDR and I need to find info on the sail we'll be using. My job is to find an "off the shelf"...

Are there any type of minerals/molecules/elements even solids that when dissolved, in say a glass of room temp water, can raise or lower the temperature? Examples...

How to make changing depths irrelevant for breathing in a small submarine or other manned underwater vehicle; in terms of the under breathing apparatus or system ?

Yes that's true I was thinking ahead Can That's all true i was thinking ahead. I really meant generating mechanical energy in one system, "transferring" or "storing" it to another system to be used later as mechanical energy...which in turn generates kinetic enrgy

Can there be a system that utilizes mechanical energy to produce kinetic energy, but "storing" the mechanical energy to be used at a different time for kinetic energy? Like a bike where you pedal but don't move; that mechanical energy is waiting to be "released" by some mechanism *** exclude...

Specifically, how does the moon's mass and size determine the distance and orientation of Mars in relation to Earth. If the moon was drilled and mined of half its mass, would that have any significant effect in the solar system?

Specifically, how deep can an enclosed space of a polycarbonate (I'm thinking about strong plastics) material withstand underwater before cracking and breaking. Say a 2 liter bottle

More specifically, can I create my own remote which connects to my phone while its playing on its own or while its connected to speakers or something?

2 slave devices to one system?? (3 TOTAL devices)

Is it as simple as obtaining a handful of strands of HFM that are rubberbanded at both ends, filling a cup with pool water and carefully pouring (making sure all the water goes through it) on the HFM so that the water that makes it to the other end is collected in a bowl?? and that collected...

What is the process? And can/cannot it filter out?

Say can a brita filter, LifeStraw type of water filter make pool water drinkable? What is the process that filters dirty water? Side note, is it possible to drain a pool of enough of its chemicals make safe for sinking? **Brita filters may be the weakest, probably just for sink water Ever hear...

Can someone explain how the intake works and the work necessary? Also, can intake be supplied by water flowing inside the system at a location on the system that is "in front of" the moving system, a system which can travel any direction underwater?

Can water inside a submersible object be pumped outwards to provide an acceleration while underwater?

For a given submersible object that has 360 directional maneuverability, what would be an ideal shape for that object? Sphere? **360 degree directional maneuverability meaning jets strategically placed around the object for propulsion, without rotating the object

Do the formation of auroras always occur in circles/ovals/ellipses?? What causes the shape of their formation?

What does 5 eV UV mean??

what em waves, other than visible light, heat/evaporate water?

essentially yeah...but do all forms of radiation illuminate a surface? Unless you just mean to direct a a low intensity of energy

I was just thinking if UV rays can be used for some good...ultimately I'm curious if it can be used to dry surfaces, like running tracks or roads, without deterring/damaging any of the surface

Mostly used for weapons, can sources of directed energy be contained at low intensities? In theory, could it be set to specific wavelengths, frequencies, intensities or whatever to say remove particles of lower cohesiveness from other surfaces or materials?

**For example, drying a surface --> I know it has an effect on the skin, but if it were contained and blocked from sight, would it still leave any radiation emissions on any hard surface??