Look up to the night sky and select a star as a destination. Can any human reach this star by just walking few steps? General relativity explained a mechanism to contract huge distances into few meters. Albert Einstein called this mechanism 'bridges' in space-time. Today scientists call them wormholes.
A wormhole acts as a shortcut connecting two distant regions in the universe.
God gave this method of transportation to his angels throughout the universe. The Quran calls them 'Ma'arej' (معارج) and describes how angels use them for long distance travel. Today Moslems know that these 'Ma'arej' is what scientists call wormholes.
Physicists know how a wormhole works but have never actually used one. Do you remember how a frictionless roller coaster works? That is, you start high and slow then you go down and fast but when you come back up again to your previous height you return to your previous slow speed? Well, the wormhole is the most efficient roller coaster you can imagine. Energy is not required to move through the wormhole, that is, you can simply switch off your rockets. Gravity accelerates you and pulls you through and then expels you the other side. You will feel like being swept by waves at the beach; nothing more. On your way through, gravity causes your clock to run slower and your ruler to shrink. Distant observers see you accelerating to relativistic speeds; as a result, your energy (and mass) increase dramatically in their view; but when you get out the other side everything returns back to normal (your clock, ruler...).
[Quran 70.1-4] Someone asked about the penalty that will befall the unbelievers; (A penalty) that has none to ward off; (a penalty) from Allah (who owns) wormholes [Ma'arej in Arabic] The angels and the Spirit ascend to Him in a day, the measure of which is fifty thousand years.
Moslems also believe that wormholes are not strictly for the use of angels. Their prophet used a wormhole once in the 'Israa & Mi'raj' (Mi'raj معراج is singular of Ma'arej). Learn More.
God says that those wormholes are doors in the heaven that contract interstellar distances into walking distances; the resulting scenery is bizarre: God says that those who do not believe in the message will not believe it even if He showed them a bigger sign. He created beautiful towering structures in the heavens. If He opens for those nonbelievers a door in heaven and lets them continue passing through it to those distant structures, they would not believe that they really got there by simply walking few steps. Instead they would think that they are just optical illusions:
[Quran 15.13-17] They do not believe the Message, like those who preceded them; Even if We [Allah] opened upon them from the heaven a door and they continued passing through it they would say 'Our sight is bedazzled, rather we have been bewitched'. It is We [Allah] who have made towering structures in the heavens and made them beautiful for beholders. And We protected them from every evil spirit accursed.
Here, they wouldn't believe their own eyes thinking that what they see is not real. They wouldn't believe that they got to those heavenly structures by simply walking few steps. But God insists that what they see is real and not illusions (that is, they really got there).
[Quran 21.104] On the day when We will fold the heaven, like the folder compacts the books, and as We originated the first creation We shall return it; a promise (binding on Us); surely We will deliver.
Here God promises to make the Big Crunch not by gravity but rather by folding the Heavens like a book, that is, by the same mechanism He controls wormholes. This means that this Big Crunch can begin and end in a fraction of a second!