On Tuesday, 16 Sep 2014 at 16:55, jenia.ivlev wrote:

[...]

> But if its possible, can someone point me to how do I press C-something
> and be teleported to the original thread. 
> I mean, for the summary buffer to open in that news-group on the
> original thread to which that sent message belongs to.

Have you tried:

,----[ C-h f gnus-warp-to-article RET ]
| gnus-warp-to-article is an interactive compiled Lisp function in
| `gnus-int.el'.
| 
| (gnus-warp-to-article)
| 
| Look up the current article in the group where it originated.
| This command only makes sense for groups shows articles gathered
| from other groups -- for instance, search results and the like.
| 
| [back]
`----

which, for me at least, is bound to "A W" in the summary and probably
article buffers.

-- 
: Eric S Fraga, GnuPG: 0xFFFCF67D
: in Emacs 24.4.50.1 + Ma Gnus v0.12 + evil-git-0469bee
: BBDB version 3.1.2 (2014-05-06 11:45:08 -0500)