You can't. The alternative for the pocket editions is the nether reactor, which is very expensive to make.
Make a 5x4 Portal going upwards of obsidian.
Make a nether portal.
You can't
No
No, sadly you can not make an Aether portal on the Xbox Edition of Minecraft because the Aether is part of a mod. As of now, the Xbox Edition of Minecraft does not support mods.
to make a portal to heaven you need glowstone and put the water in it
Make a nether portal.
No
Well, unfortunately it is impossible to make a portal gun without the mod. Sorry.
Those do not exist in Vanilla Minecraft. There may be a mod that allows you to do that.
Idgaf
Its impossible but in pc or xbox