Sever Force was a non-lethal Force power by which a being's connection to the Force was temporarily interrupted, or blocked from them with a wall of light side energy afflicting the targets mind, or with more devastating versions destroyed their connection to the Force by killing the Midi-chlorians of the target.
Darth Sidious' knowledge of the dark side essentially allowed him to outmaneuver the Jedi, and with the darkness ascendant, they found themselves becoming weaker by the day, less able to call upon the Force for wisdom, and more likely to make mistakes.
He cut himself off from the Force so that he wouldn't jeopardize Luke by alerting Vader or the Inquisitorius to their presence.
Think how Obi-Wan felt in A New Hope, but the strain was so intense for the Exile that she was forced to cut herself off from the Force. What that meant is that she didn't have access to any Force-related abilities like telekinesis, precognition, mind tricks, etc.
Several Force powers had different demands in concentration and endurance than others, on behalf of the Force user. Continuous or excessive usage of the powers would have resulted in "Force fatigue" with several unwanted symptoms, both physical and mental.
Vader relies on the complex life support system of his suit to survive and it happens to be very vulnerable to electrical discharges. So, if Vader ever had unleashed Force lightning, there's a good chance it would've caused his suit to short circuit, thus, killing him.
Trained Jedi could sense high levels of the Force in individuals. The presence of Force-sensitives in a vicinity could also be sensed. On rare occasion, such Force-sensitivity could be detected emanating from a powerful "vergence in the Force".
Most recently, the book Shadow of the Sith introduced an artifact that forcibly cut Luke off from the sacred energy field. Ultimately, he cut himself because he felt unworthy to be "the chosen one" and because he didn't want to know, or more accurately feel, what was going on in the universe.
Tala, his Threshold Guardian who restores him to physical health and prods him to reconnect with the Force (just as Obi-Wan himself will later help Luke take his first steps into a larger world) helps him infiltrate an Imperial stronghold to rescue the captive Leia, just as Luke stormed the Death Star to rescue the ...
Master Yoda has risen above all others to claim the top spot as the most powerful Jedi of all time and the true chosen one according to IGN's audience. He won pretty handily as well, as he was victorious in 89,756 of his 95,243 battles and had a win percentage of 94.2%.
Why does Obi-Wan Kenobi age like that? Because he's not real, and is a fictional character played by different people. You see, Obi-Wan Kenobi is played by Alec Guinness in the original trilogy. Guinness was 62 when he filmed A New Hope, and he died in 2000.
So, Vader let him go so that Obi-Wan could regain his full strength because what Vader really wanted was to prove that he was more powerful than his master ever was -- and offing "Ben Kenobi" would have been a massive letdown. To see Vader and Obi-Wan's second confrontation, watch Obi-Wan Kenobi.
This is the most well-known of the Jedi rules. Love leads to attachment and attachment leads to strong emotions, which are the path to the Dark Side of the Force. Because of this, Jedi are forbidden to fall in love.
One would think plenty of people would vividly remember a war fought between faceless droid armies on one side and laser sword-wielding space wizards on the other. The explanation for this discrepancy has always been that the newly minted Emperor Palpatine went out of his way to bury all traces of the Jedi.
The Jedi prophecy foretold the destruction of the Sith, but it never predicted the end of darkness. Although Anakin Skywalker brought the Force back into balance, the Jedi Order was decimated by his actions as Darth Vader, leaving Luke Skywalker as the last of the Jedi.
McGregor explained that his character "can't reach out to any of the surviving Jedi for fear of giving himself away."
Mace Windu appears as a Force ghost in the alternate history comic Star Wars Infinities: The Empire Strikes Back in a vision to Darth Vader, though this may only be a mental vision in Vader's mind as opposed to an actual Force ghost.
The Force is a mysterious energy field created by life that binds the galaxy together. Harnessing the power of the Force gives the Jedi, the Sith, and others sensitive to this spiritual energy extraordinary abilities, such as levitating objects, tricking minds, and seeing things before they happen.
Luke was “once bitten, twice shy.” He feared Rey's potential for Darkness because he had already seen Ben Solo fall to the Dark Side.
It was kind of a race between him and Vader to see who could get him to join first, because the one who got Luke to join him knew that the other would die. So Palpatine was afraid that Luke would join Darth Vader and kill him, and they would rule the Galaxy together.
The Rebels launched a desperate attack, and a young pilot named Luke Skywalker -- strong with the Force -- flew an X-wing down the Death Star's trench, making the impossible shot. The space station was destroyed, and Tarkin with it. Darth Vader, however, absconded in his TIE Advanced.
Anakin Skywalker, the Chosen One born of a mother but no father, had more midi-chlorians than any Force-sensitive of his era, surpassing all Jedi and even Yoda at over twenty-thousand.
Midi-chlorian counts were linked to potential in the Force, ranging from normal Human levels of 2,500 per cell to the much higher levels of Jedi. The highest known midi-chlorian count—over 20,000 per cell—belonged to the Jedi Anakin Skywalker, who was believed to have been conceived by the midi-chlorians.