Technically yes. The Astral body is a an intermediate between
the soul and the physical body that is composed of subtle
material.
View page
Yes, your astral body.
View page
There are techniques for what is called 'astral projection' or OBE (out-of-body experience). You may refer to diverse books on those subjects.
View page
Astral Travel basically means an out-of-body experience. It's
the separation of the physical body and the capability to travel
outside of it. It can also be considered the separation of the
spirit body.