Why do some Jedi disappear?

[darthnidankendo]

I hope this hasn't been done to death. But, why is it that some Jedi desappear when they die and some of them do not?

[Gorefiend]

It depends on how powerful they are. That’s basically the entry trick behind it.

[Robert Walper]

I hope this hasn't been done to death. But, why is it that some Jedi desappear when they die and some of them do not?

Great Jedi don't die...they just fade away...

According to some sources, I think it has to do with training and knowledge of the Force.

Possible spoiler:

Supposedly Yoda looks up the means to do this when faced with the extinction of the Jedi in ROTS...

[Stofsk]

I hope this hasn't been done to death. But, why is it that some Jedi desappear when they die and some of them do not?

You will find out in May. Lucas has promised an answer to this riddle.

[VT-16]

Yes, you´ll find out in May.

[Stofsk]

Echo!

[VT-16]

Sometimes things need to be said twice, or thrice or... you get the point.

[paladin]

Avoiding the tax man I bet!

[darthnidankendo]

exellent! thank you for your enlightment.

[Aki-Wan Hanabi]

Powerfull i am with the Force, but not that powerfull