Star Wars is a famous science fiction film series directed by George Lucas. Outside of the seven films and two television series, Star Wars is expanded by many canonical novels, comics, and video games, as well as source books by which to continue the story. Some claim it is not canon (like the majority of secondary sources for Star Trek) and Lucas doesn't care for EU but then again, they tend to ignore his involvement in EU and EU's involvement with the films or the fact that Lucas specifically had the Keeper of EU + Film canon with him during the re-shooting of the Special Edition films and the entirety of the Prequel Trilogy or his constant use of references to events only in the Expanded Universe.
The majority of the novels take place before, during, between and after the events of the main two film trilogies; Shadows of the Empire was set in-between and after the events of Episode V and before the story of Episode VI. With the Original Trilogy, most of the over-reaching focus was pushed onto the formation and establishment of the New Republic, and the fragmentation and dissolution of the Galactic Empire after the Battle of Endor. With the Prequel Trilogy, EU authors focused more on the development of the Clone Wars and as of late: post-Order 66 or post-Episode III events, and the Jedi Purge.
On April 25, 2014, Lucasfilm Ltd. announced that in preparation for the upcoming sequel trilogy, the Expanded Universe would be retconned; past tales of the Expanded Universe will be printed under the Star Wars Legends banner, and a new continuity has been established that consists only of the original six films, the Star Wars: The Clone Wars television series and film, and all future material from that point onward. Though past elements of the Expanded Universe have been declared non-canon as a whole, they remain a resource for future Star Wars material to reference, thus bringing these elements into the new continuity as canon.
Power of the Verse
More often the focus is on Force-User characters, specifically those who are Jedi or Sith. With broken abilities such as high level telepathy capable of dominating entire planetary populations, draining worlds, extremely fine level precision use of telekinesis as well as other esoteric powers, Force-Users are formidable opponents.
An upper-mid tier Jedi Master such as Obi-Wan Kenobi at his prime has no difficulty moving and reacting when augmented by the Force and his own perceptions, performing reactionary feats and attack speeds against entire armies to pull off up to mach 4000-16,000 speeds and move his lightsaber so fast it appears like he created a literal spherical force field around himself.
Even weaker Jedi Knights precognition works beyond their own understanding and can adapt against lightspeed attacks.
This is thanks to a bevy line-up of ridiculously powerful telepaths, beings who can wipe out entire worlds, technology great enough to manufacture planet razing self-adapting and evolving city size automated factories to small starships capable of wiping out entire star systems, and beings who have mastered technology and mystical powers like the Celestials who have seemingly become omniscient and went onto a higher realm or plane of existence.
While not nearly as powerful as its legends counterpart this continuity is very much still in its infancy and is likely to grow in power as time passes but for now most Jedi/Sith sit anywhere between large building level to Mountain level+ and the god tiers being above that by a tremendous amount.
Supporters and Opponents of the Series
Valar Melkor 2
The First Order
Criminal Syndicate Leaders and Gangsters
Beasts and Alien Species
Non Jedi/Sith Force Beings
The Ones of Mortis:
Abeloth (The Mother)