The Night Journey and Ascension are not presented in Islam as an ordinary space flight, but as a miracle of God involving both the seen and unseen creation. Astronomy can tell us much about the observable universe, but it cannot disprove an event whose very claim is that God carried His servant beyond normal human limits.
The challenge at its strongest
The objection is not silly. If someone imagines the Mi'raj as a man physically flying upward through outer space, passing planets and galaxies until he reaches a stack of seven material ceilings, then the problem is obvious. Human bodies cannot survive the vacuum of space, and modern astronomy has not found a literal seven-floor universe above the earth.
Critics then say: either Muslims must make it a dream or vision, against the traditional reading, or accept a cosmology that science has refuted. On that basis, they argue, the story cannot support the truth of prophethood.
What the texts actually claim
"Glory be to the One who took His servant by night from the Sacred Mosque to the Farthest Mosque, whose surroundings We have blessed, to show him some of Our signs. Indeed, He is the Hearing, the Seeing."
Quran 17:1
The verse says "His servant" - not merely "his soul" or "his mind." In normal Quranic language, the servant is the whole person. This is why the mainstream scholars held that the Isra and Mi'raj happened bodily and while awake, even though some early voices discussed a visionary interpretation.
The Quran also describes the Prophet (PBUH) seeing great signs near the Lote Tree of the Utmost Boundary:
"And he certainly saw him in another descent, at the Lote Tree of the Utmost Boundary... The sight did not swerve, nor did it transgress. He certainly saw of the greatest signs of his Lord."
Quran 53:13-18
The hadith literature gives the fuller account: the journey to Jerusalem, the ascent through the heavens, meeting earlier prophets, and the obligation of prayer.
"Then fifty prayers were enjoined upon me... I kept going back between my Lord and Moses until He said: They are five, and they are fifty in reward."
Sahih al-Bukhari 3887
Why this is not refuted by astronomy
The key point is simple: the Mi'raj is a miracle, not a proposed model of astrophysics. Islam is not saying that anyone can reproduce this journey by technology, nor that the seven heavens are the seven planets, atmospheric layers, or a set of physical shells detectable by telescopes.
The word "heavens" in revelation can refer to the created realms above us, including realities of the unseen. The reports speak of gates being opened, angels, prophets, and divine signs. That is already a category broader than ordinary space. To object, "a human body cannot survive unaided in space," is true but beside the point. The claim is precisely that he was carried and protected by God.
If God exists and created matter, space, time, life, and the laws by which bodies usually function, then preserving a body during an extraordinary journey is not logically impossible. It may be beyond our normal experience, but "beyond normal experience" is not the same as contradiction. A square circle is impossible. A created body being sustained by its Creator is not.
What it does and does not establish
The Mi'raj by itself will not convince a person who has already ruled out God, revelation, angels, and miracles. For such a person, every miracle report will be rejected before the evidence is heard.
But the objection from astronomy does not defeat the Islamic account. It only defeats a crude version of it, where the Mi'raj is treated as a natural space expedition through a fully material seven-story cosmos. The traditional belief is more precise: the Prophet (PBUH) was taken bodily by God, shown signs of the unseen, and returned the same night.
So the question is not whether a human being can do this on his own. Of course he cannot. The question is whether the Creator can carry His servant beyond the ordinary limits of creation. Islam answers yes, calmly and without embarrassment.