Truth does not need exaggeration. These popular claims are false, mistranslated or unsupported, and repeating them harms the credibility of the genuine signs. We list them openly so readers can share with confidence.
This rumor circulated widely in the 1980s. Neil Armstrong publicly denied it on several occasions, and he never converted to Islam. Repeating it damages the credibility of those who share it.
There is no reliable evidence for this, and people and organizations close to Cousteau have denied it. The Quranic description of the barrier between seas stands on its own merits. See the barrier between two seas.
وَٱلْأَرْضَ بَعْدَ ذَٰلِكَ دَحَىٰهَآ ٣٠
And after that He spread the earth.
Classical Arabic lexicons give daḥā as "to spread out or extend." The related word udḥī is the hollow an ostrich scrapes in the ground for its eggs, a spread-out place, not the egg. Saheeh International: "And after that He spread the earth." See night wrapped over day for a sounder discussion.
يُدَبِّرُ ٱلْأَمْرَ مِنَ ٱلسَّمَآءِ إِلَى ٱلْأَرْضِ ثُمَّ يَعْرُجُ إِلَيْهِ فِى يَوْمٍ كَانَ مِقْدَارُهُۥٓ أَلْفَ سَنَةٍ مِّمَّا تَعُدُّونَ ٥
He arranges [each] matter from the heaven to the earth; then it will ascend to Him in a Day, the extent of which is a thousand years of those which you count.
A popular calculation combines "a thousand years of those which you count" with lunar orbital figures to arrive at roughly 299,792 km/s. It depends on several arbitrary choices: which month, which reference frame, and what "the matter" that ascends is. The verse itself is about Allah's management of affairs and the difference between divine and human time scales. We do not recommend this claim.
فَلَآ أُقْسِمُ بِٱلْخُنَّسِ ١٥ ٱلْجَوَارِ ٱلْكُنَّسِ ١٦
15 So I swear by the retreating stars - 16 Those that run [their courses] and disappear [i.e., set]
The words al-khunnas, al-jawār al-kunnas were understood by early exegetes as stars or planets that recede, run their courses and disappear from view, or that set. Saheeh International translates them as "the retreating stars" (both verses are shown in full above). Linking them to black holes is speculative and not supported by the language.
لَقَدْ أَرْسَلْنَا رُسُلَنَا بِٱلْبَيِّنَـٰتِ وَأَنزَلْنَا مَعَهُمُ ٱلْكِتَـٰبَ وَٱلْمِيزَانَ لِيَقُومَ ٱلنَّاسُ بِٱلْقِسْطِ ۖ وَأَنزَلْنَا ٱلْحَدِيدَ فِيهِ بَأْسٌ شَدِيدٌ وَمَنَـٰفِعُ لِلنَّاسِ وَلِيَعْلَمَ ٱللَّهُ مَن يَنصُرُهُۥ وَرُسُلَهُۥ بِٱلْغَيْبِ ۚ إِنَّ ٱللَّهَ قَوِىٌّ عَزِيزٌ ٢٥
We have already sent Our messengers with clear evidences and sent down with them the Scripture and the balance that the people may maintain [their affairs] in justice. And We sent down iron, wherein is great military might and benefits for the people, and so that Allāh may make evident those who support Him and His messengers unseen. Indeed, Allāh is Powerful and Exalted in Might.
Claims that the number of Surah al-Hadid (57) or its verse numbers correspond to iron's atomic number or isotope mass depend on choosing which numbers to count and how. Verse numbering was not part of the original recitation in the way such claims assume, and different counting traditions exist. The verse's statement about iron is worth reflecting on. See iron sent down. The numerology is not.
This claim depends on which word forms are counted, whether plurals and related words are included, and which instances refer to physical seas. Different counting choices give different results. Word-count claims like this cannot be checked consistently and should not be presented as evidence.
وَأَلْقَىٰ فِى ٱلْأَرْضِ رَوَٰسِىَ أَن تَمِيدَ بِكُمْ وَأَنْهَـٰرًا وَسُبُلًا لَّعَلَّكُمْ تَهْتَدُونَ ١٥
And He has cast into the earth firmly set mountains, lest it shift with you, and [made] rivers and roads, that you may be guided,
The Quran describes mountains as firmly set "lest it shift with you," meaning the earth is made a stable home. It does not claim earthquakes never happen, and geology shows that mountain belts are often seismically active. See mountains as pegs.
وَمَا تَكُونُ فِى شَأْنٍ وَمَا تَتْلُوا۟ مِنْهُ مِن قُرْءَانٍ وَلَا تَعْمَلُونَ مِنْ عَمَلٍ إِلَّا كُنَّا عَلَيْكُمْ شُهُودًا إِذْ تُفِيضُونَ فِيهِ ۚ وَمَا يَعْزُبُ عَن رَّبِّكَ مِن مِّثْقَالِ ذَرَّةٍ فِى ٱلْأَرْضِ وَلَا فِى ٱلسَّمَآءِ وَلَآ أَصْغَرَ مِن ذَٰلِكَ وَلَآ أَكْبَرَ إِلَّا فِى كِتَـٰبٍ مُّبِينٍ ٦١
And, [O Muḥammad], you are not [engaged] in any matter and do not recite any of the Qur’ān and you [people] do not do any deed except that We are witness over you when you are involved in it. And not absent from your Lord is any [part] of an atom's weight within the earth or within the heaven or [anything] smaller than that or greater but that it is in a clear register.
Saheeh International translates mithqāl dharra as "an atom's weight," but classically a dharra was a tiny ant or a particle of dust visible in a sunbeam, the smallest thing people could imagine. The phrase "or [anything] smaller than that" expresses Allah's complete knowledge of everything. It is not a statement of particle physics.