We know from Einstein that my clock and your clock will not run at the same rate. Time (or rate of our clocks) depends on acceleration and/or gravity. If my clock accelerates and/or is in a strong gravitational field then it will run slower than your clock. The stronger the gravity/acceleration the slower the time. So time is relative. Quran 22.47 compares time on Earth with time at Paradise/Hell (1 day vs 1000 years); while Quran 70.4 compares time on Earth with time in wormholes (1 day vs 50,000 years).
When angels travel by a wormhole (miaaraj in Arabic معراج) they experience different time than ours:
The angels and the Spirit ascend to Him in a day, the measure of which is fifty thousand years.
٤ تَعْرُجُ الْمَلَائِكَةُ وَالرُّوحُ إِلَيْهِ فِي يَوْمٍ كَانَ مِقْدَارُهُ خَمْسِينَ أَلْفَ سَنَةٍ
Here angels will experience 1 day while humans will measure it as 50,000 years (time vs. time and not time vs. distance). This can happen if angels pass through wormholes. This is a picture of a wormhole.
The Quran says that angels use these wormholes to reach any place in the universe. An observer outside gravitational fields sees those angels passing by him at 99.99999...% of the speed of light (relativistic speeds, very close to the local speed of light), that is at 299792.457999...km/s. But when those angels enter the gravitational field of a wormhole this observer still sees those angels entering the wormhole at 99.99999...% of the speed of light however that would no longer be at 299792.457999...km/s. This is because in the presence of gravity the speed of light becomes relative. If he sees the speed of light in a wormhole at 10 meters/sec, for example, then he would see those angels traveling at only 9.999999...meters/sec, flapping their wings in slow motion, reddish in color and very dim (and in turn they would see him in fast motion, bluish in color and very bright). A smaller time dilation (say 100 or 1000 years vs. one day) can also occur if we stand on Earth and angels stand on a neutron star (or resist their fall into a neutron star; gravitational time dilation). This makes their velocity relative to us to be zero (and not 299792.457999... km/s). But naturally occurring wormholes connect distant black holes; however at a lower time dilation (100 or 1000 years vs. one day) the two entrances of the wormhole cannot connect; hence a wormhole cannot form. So with the time dilation stated in the Quran (50,000 years vs. 1 day) and the fact that angels are moving then those angels have to be crossing a wormhole. The neutron star or any other scenario cannot do. Learn more: Wormholes.
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