Star Wars takes place "in a galaxy far, far, away" which is trapped in the iron grip of the Emperor of the Galactic Empire, Sheev Palpatine. The series opens with Palpatine's enforcer, the feared Darth Vader, boarding Tantive IV, the personal starship of Princess Leia Organa, the princess of Alderaan. Before being arrested by Vader and Imperial Forces, Organa uploads the plans of the Death Star superweapon being constructed in secret as well as a holographic plea to Jedi Master Obi-Wan Kenobi to R2-D2, an astromech droid once belonging to famed Jedi Knight Anakin Skywalker. After evading Vader's grasp, R2-D2 and his companion, the translator droid C-3PO, land on Tatooine, where the plans and the message fall into the hands of LukeSkywalker, a young moisture farmer living with his aunt and uncle. This fateful event would soon drag Luke into a conflict that will define the fate of the galaxy.
Decades before the rise of the Galactic Empire existed the Galactic Republic, a representative democracy that spanned the whole of the galaxy and had representatives from nearly every inhabited world. During this time, the Jedi Order, an organization of peacekeepers who sought to preserve balance in the Force and harmony across the galaxy, was forced to step into the ensuing civil war between the Republic and the Confederacy of Independent Systems as the latter attempted to secede from Republic control. The "Separatists" were backed by the Sith, the Jedi Order's counterparts who wished to utilize the Force as a means of gaining power and control. With the Republic's forces outnumbered by the Separatists' ever-growing army of droids, the Jedi and the Republic turned to creating an army of clones to bolster their ranks. Hence the times became known as the Clone Wars, in which conflict, corruption, and war raged across the galaxy, eventually leading to the fall of both the Republic and the Jedi Order as well as the advent of the Empire.
Since Disney's acquisition of the franchise, Star Wars has been split into two separate continuities. The current "Canon" consists of the original trilogy, the prequel trilogy, Star Wars: The Clone Wars, the third trilogy that began with the release of The Force Awakens, and supporting materials and spin-offs released since ownership changed hands. All other comics, novels, video games, and other materials released before the series' acquisition as part of the "Star Wars Extended Universe" (frequently abbreviated as EU) have been designated as part of the "Legends" continuity. These materials include (but are not limited to) The New Jedi Order novels and comics, the Legacy comics, Star Wars: Knights of the Old Republic, and The Thrawn Trilogy.
Timeline: The Eras of Star Wars
Every saga has a beginning, middle, and end. The stories of the galaxy far, far away span thousands of years, with eras defined along a mythological timeline giving context to its past, present, and future. As Star Wars continues to expand and evolve, these eras provide a sense of scope to an epic tale still being told.
Dawn Of The Jedi (c. 25,025 BBY)
The Dai Bendu, a religious group credited with creating the first holocrons, served as the precursor to the Jedi Order, which was later founded on Ahch-To by an individual known as the Prime Jedi in pursuit of peace and justice. The First Jedi Temple was constructed there, followed by the development of a Jedi village on the Temple Island. Soon after the Order's founding, the planet Ilum was discovered by a Jedi scout using Force-assisted hyperspace navigation.
The Old Republic (25,025 BBY – 1000 BBY)
The Republic is founded among the worlds of the Galactic Core, and the Jedi Order emerges to protect it. A schism within the Jedi leads to the creation of the Sith in this epic era.
The High Republic (500 BBY – 100 BBY)
Under the protection of the Jedi Knights and the wise rule of the Senate, the Republic grows into a golden age. The vast Outer Rim beckons the intrepid seeking to discover new worlds and spread the optimism of the Republic.
Fall of the Jedi (32 BBY – 19 BBY)
A long forgotten menace returns as a Sith lord orchestrates a devastating conflict, plunging the galaxy into full scale war with the Jedi Knights at the frontlines.
Reign of the Empire (19 BBY - 0 BBY)
Through treachery and deception, the Galactic Empire rules unchallenged and grows in military might. A scant few Jedi survivors retreat into the shadows as they are hunted down mercilessly.
Age of Rebellion (0 ABY - 5 ABY)
Outnumbered, the Rebellion spreads across the galaxy. Rebel heroes fan the flickering light of hope in a heroic stand against the evil Galactic Empire.
The New Republic (5 ABY - 34 ABY)
The Empire has been defeated, and the emergent New Republic faces the great challenge of rebuilding and reuniting the galaxy. It is a tentative and fragile peace, threatened by the remnants of the Empire.
Rise of the First Order (34 ABY - 35 ABY)
In secret, the legacy of the Empire transforms into the First Order and strikes a devastating blow against the New Republic. A fledgling Resistance and new generation of heroes are left to stand against a resurrected enemy.
New Jedi Order (35 ABY - ...)
Rey finalizes the construction of her yellow-bladed lightsaber, her new personal weapon, and then, alongside BB-8, pilots the Millennium Falcon to Tatooine, where she buries Luke and Leia’s sabers by the Lars Homestead and, with their blessing, claims the Skywalker name. The destruction of the Sith ushers in a new era whose shape the Force has yet to reveal. Some months after the Battle of Exegol, Beaumont Kin leads an expedition to excavate the Sith Citadel, delving into the hidden legacies of the Sith Order and Palpatine himself. Rey’s new blade comes to honor the Skywalker legacy as she, now a Jedi Master, strives to restore peace across the galaxy and builds a new Jedi Order.
Power of the Verse
In the current "Canon", also referred to as the "Disney Canon", even Jedi Younglings who have just begun their Jedi training have showcased Large Building level to City Block level telekinetic feats. Force sensitives on the level of well trained Jedi Padawans and fully fledged Jedi Knights have showcased casual City Block level feats, with their highest showings reaching Town level+ or higher. Fully fledged Jedi Masters, Sith acolytes, and Sith Lords have showcased up to Large Town level feats, with the more powerful ones such as Darth Vader, Darth Maul, Ahsoka Tano and Obi-Wan Kenobi scaling to a feat at Mountain level. The most powerful Force users Yoda, Darth Sidious and Mace Windu have showings in the Island level range. Virtually all notable Force adept possess Subsonic running speed with Force augmentation as well as Massively Hypersonic to Massively Hypersonic+ combat speed and reactions that are augmented by Precognition.
The most powerful characters in the continuity, The Ones of Mortis, are vastly above any normal Force adept and can potentially destroy the galaxy if they were ever to come to blows.
The Disney continuity is decently advanced in terms of technology. Soldiers and bounty hunters have access to hand-held weapons ranging from Small Building level pistols to Large Building level+ heavy weaponry. They also have access to body armor with similar range of tiers of durability (Small Building level to Large Building level+).
Ground vehicles range from simple scout vehicles with Building level to Large Building level+ firepower and durability to monstrous main battle tanks which can not only dish out Town level+ to Large Mountain level+ firepower but also take Town level+ firepower. Spaceships in the verse range from several meter long starfighters packing Small Town level laser cannons and Mountain level bombs/missiles to city sized capital ships packing weaponry which can melt large cities, cause extremely violent earthquakes, even life-wipe planets and reduce the crust to molten slag. The verse also boasts of FTL travel technology called “hyperdrives”. The highest rated hyperdrives allow for traversing distances of tens of thousands of light-years in just several hours. The most powerful vessels in the Canon so far are the superweapon equipped battle stations which boast of Large Planet level to Large Star level firepower.
Star Wars has a large line-up of megafauna and exotic creatures that range from Small Building level to Large Building level+ land & aquatic animals, to Town level+ and even Large Mountain level+ space-faring creatures. There are also Sith warbeasts who range from Small Building level attack dogs to gigantic dragons that can unleash violent earthquakes that can devastate cities. The Canon comics have also introduced moon-sized creatures who can casually rip apart the entire crust of a planet.
Explanations
The Force (Canon)
Star Wars Cosmology (Canon)
Consciousness, Spirits, and Ghosts in Star Wars (Canon)
Lightsaber Combat, the Jedi Path, and the Jedi Arts in Star Wars (Canon)
About the orbital bombardment scene in the Star Wars Rebels episode 'Zero Hour'