Islam introduced many scientific advancements to humanity which could not have been deduced or known about by mankind 1400 years ago. Here are a few examples of them:
The heavens and the earth were one before they were ripped apart. Life started in the water and living things are mostly water [21:30]. Today when scientists look for traces of life on Mars or Jupiter moons, they look for water!
Creatures came out of the water and were followed by two limbed propulsion then 4 legged creatures [24:45].
The heavens are expanding [51:47]. Modern science tells us that the universe was started from a singularity. The pictures taken by Edwin Hubble in Mount Wilson observatory in 1929 showed that the universe was expanding which led to the Big Bang theory. The Quran anticipated this "discovery" by 14 centuries.
The heaven used to be smoke [41:11]. We know that smoke is a mixture of hot gases and suspended particles.
The atom is not the smallest unit of matter in the universe which indicates the presence of subatomic particles! [34:3]
The Universe was created over a very long period. For God, some days last 1000 lunar years [22:47, 32:5]. This was used by Professor Mansour Hassab-Elnaby, an Egyptian physicist, to calculate the speed of light c=299792.5 km/s !!!
The Quran predicts that the speed of light is not the fastest speed in the universe. Angels travel "in a day, that which would otherwise take 50 years". Angels are made of light, so they can travel in 1 day, the equivalent of 50 light years (comes to 18250 times the speed of light) [70:4]
The earth rotates around its axis [27:88], rotates around the sun [7:54], is not flat but is roughly similar to a ball [39:5] or more precisely, an egg [79:30] (i.e. larger across the equator than between the poles).
Iron was sent to earth by God [57:25]. Scientists now believe that one way that iron was introduced to earth was by meteors.
The oceans have layers of waves and layers of darkness in which some creatures have light [24:40]. Scientists discovered recently different currents at different depths.
When different seas (i.e. different in salinity, temperature, oxygen content, etc.) meet, there is a barrier between them that they do not violate [55:19-20]. This was previously difficult to visually observe but temperature sensitive satellite pictures confirm this as well as expeditions to sea beds, some of which have found separately layered water of higher salinity flowing independently of the normal sea water above it (see the Blue Planet and Planet Earth documentaries).
Mountains are pegs that have roots extending below the surface of the earth [78:7], mountains stabilise the earth's crust by minimizing earthquakes [16:15].
Earthquakes precede volcanic eruptions [99:1].
The earth's core is heavier than its crust [99:2].
Our sun is not the only sun in the universe [25:61]. Modern astronomy tells us that the sun is actually a star and therefore the universe is full of suns. Astronomers are looking for other planets like ours. The Quran predicts they will find other planets [65:12]
The Bible differentiates the sun and the moon by size only, and also claim that both produce light: "God made two great lights--the greater light to govern the day and the lesser light to govern the night. He also made the stars" [Genesis 1:16]. The Quran tells us that: the sun is a shining glory while the moon is a reflected light [10:5]; the sun is a lamp and the moon is a (reflected) light [25:61,71:16]; the sun is a blazing lamp [78:13]. Showing us that the Quran was scientifically correct in stating that the Sun produces light, whereas the moon merely reflects it...something only postulated by modern scientific thought much later on.
The solar system is travelling through the universe to a final destination [36:38]. The Solar System does indeed move through the universe (and through our own galaxy too).
At the end of time, the sun will stop radiating energy and will be folded into a ball [81:1]. Current theory postulates that the sun "will shrink to 1/10 it's current size ... the final naked core, a white dwarf, will have a temperature of over 100,000 K, and contain an estimated 54.05% of the Sun's present day mass".
Morning is associated with breathing [81:18]. Now we know that plants produce oxygen in presence of light and consume carbon dioxide.
Sperm attaches itself to the egg to form an attachment or a leach then a chewed-like lump which develops bones which are covered with flesh and then changed into a different form [23:14]. This refers to facts discovered only recently when scientists, using special scopes, followed the development of the fetus from a fertilized egg to a form resembling lower vertebrae before turning into the human form.
After contemplating the descriptions of embryonic stages as a leach then a chewed-like lump [23:14], Professor Keith Moore, a Canadian embryologist, compared pictures of different embryonic stages to pictures of leaches and chewed clay and confirmed the amazing accuracy of the Quranic verses.
Human pregnancy passes through 3 trimesters [39:6]
Different clouds (positively and negatively charged) are harmonised to produce droplets of water and lightning [24:43].
Now these may not seem that impressive today as these facts have been scientifically verified in the modern age but the key here is to judge it in context... 14 centuries ago how cold any member of mankind know any of these facts as we know them today? This is just the tip of the iceberg and there are many more scientific truths within Islam that should make any rational person ponder it's accuracy and validity.