Ripples in spacetime.
Gravitational waves are disturbances in the curvature (fabric) of spacetime, generated by accelerated masses, that propagate as waves outward from their source at the speed of light…
Gravitational-wave astronomy is a branch of observational astronomy that uses gravitational waves to collect observational data about sources of detectable gravitational waves such as binary star systems composed of white dwarfs, neutron stars, and black holes; and events such as supernovae, and the formation of the early universe shortly after the Big Bang.
Wikipedia, Gravitational Wave, 2019
These are actual waves in spacetime. However they were portrayed in the Quran 1400 years before they were discovered.
[Quran 52:9] On the Day when the heaven vibrates in waves.
“Maur in Arabic مَور” means waves. “Tamur تَمُورُ” means vibrates and is also found in Quran 67:16 describing the vibrations of an earthquake. This verse says that the heaven will vibrate in waves. Today we know that gravitational waves are actual waves, however when a gravitational wave passes through an object it stretches and contracts it in a specific way:
A gravitational wave stretches and contracts an object in its place (does not toss it around like the waves at the beach). This is described in the Quran by “Tamur تَمُورُ” which means vibrates. The Quran is describing vibrations caused by waves, today we know that gravitational waves stretch and contract an object in its place.
When a star moves it generates gravitational waves in spacetime similar to when a ship moves it generates waves in water.
This was only known recently, however this was portrayed in the Quran 1400 years before it was discovered.
[Quran 21:33] It is He who created the night and the day, and the sun and the moon, everything swimming in an orbit.
Yasbahoon يَسْبَحُونَ means swimming. Today we know why the Quran used this word “swimming” because they are generating waves in spacetime.
Maps use the same convention for directions.
Historically several conventions were used to set directions on maps. Different conventions pointed to different directions. This is an old compass and an old map:
However all the ancient conventions faded except one. Today all maps use the same convention: Up is North, right is East, left is West and down is South. This means if you are standing then the sun rises to your right and the sun sets to your left, you are facing North and behind you is South.
However 1400 years ago this was portrayed in the Quran:
[Quran 18:17] You would see the sun, when it rose it shone into their cave from the right, and when it set it shone from the left, as they lay in the midst of the cave. That was one of Allah’s wonders. He whom Allah guides is truly guided; but he whom He misguides, for him you will find no directing friend.
If the sun rises to your right and the sun sets to your left then definitely you are facing North, and behind you is South. This is the same convention used today in all maps.