Whats the difference?

I agree with robert bruce. Your etheric body cannot leave your physical body until you die. The reason for that is, your etheric body would have to draw energy from the physical body, wich cannot be done.

Simplest terms...

Lucid dreaming is staying within your own mind.

Astral Projection is being able to project into the astral planes, while your physical body is unconscious, yet able to retain the memories of the event ( for the most part )

Etheric projection is projecting within the physical plane and higher planes while your body is conscious. This includes what we call Out of Body Experiences, as well as a form of Astral Projection. Again, the biggest difference is that you are conscious and aware of the events as they are happening.

Oh Rash don't forget the color scope is a bit different on higher vibrations. Etheric is much more brighter than Astral.

Lovely answers. I would just like to clarify that lucid dreaming is, simply, AWARENESS that you are dreaming. It is not Controlled Dreaming! However, it is a good plce to start :)

You can control a lucid dream. So i have to disagree on that. But realizing your dreaming is just a step in it.

Once you control it, it is a controlled dream. Having lucid nightmares, without ability to control is a common problem. Of course, lucid dreaming is the first step to controlled dreaming :)

astral projection is just projection on the physical plane.......etheric is more projecting to the atral plane itself.
astral projecton is seprating your astral body from your physical lucid dreaming is knowing that you are dreaming and you can control what you dream

actually lucid dreaming is a form of astral projection. it just deals with a different plain than what most people would identify as the astral plains

All dreams can be controlled, and you are always in control. Your dreams are what you are thinking about. You may not be conscious of it, but you're in control. Meditation before sleep is something I always suggest, it helps calm your mind, and helps you consciously control it.

Your subconscious is still you, so you are always in control.

Sorry for the double post, but Rashnu was right. Lucid Dreaming, is pretty self explanatory. It is just a dream, meaning, it's in your head, it is on another plain.