The word(s) "heaven" appears 287 time(s) in 275 verse(s) in Quran in Mohsin Khan translation.

(41) Thus did we show Ibrahim (Abraham) the kingdom of the heavens and the earth that he be one of those who have Faith with certainty.

(42) Verily, I have turned my face towards Him Who has created the heavens and the earth Hanifa (Islamic Monotheism, i.e. worshipping none but Allah Alone), and I am not of Al-Mushrikun (See V.2:105)".

(43) He is the Originator of the heavens and the earth. How can He have children when He has no wife? He created all things and He is the All-Knower of everything .

(44) Verily, those who belie Our Ayat (proofs, evidence, verses, lessons, signs, revelations) and treat them with arrogance, for them the gates of heaven will not be opened, and they will not enter Paradise until the camel goes through the eye of the needle (which is impossible). Thus do We recompense the Mujrimun (criminals, polytheists and sinners).

(45) Indeed your Lord is Allah, Who created the heavens and the earth in Six Days, and then He rose over (Istawa) the Throne (really in a manner that suits His Majesty). He brings the night as a cover over the day, seeking it rapidly, and (He created) the sun, the moon, the stars subjected to His Command. Surely, His is the Creation and Commandment. Blessed is Allah, the Lord of the 'Alamin (mankind, jinn and all that exists)!

(46) And if the people of the towns had believed and had the Taqwa (piety), certainly, We should have opened for them blessings from the heaven and the earth, but they belied (the Messengers). So We took them (with punishment) for what they used to earn (polytheism and crimes).

(47) Say (O Muhammad صلى الله عليه وسلم): "O mankind! Verily, I am sent to you all as the Messenger of Allah - to Whom belongs the dominion of the heavens and the earth. La ilaha illa Huwa (none has the right to be worshipped but He). It is He Who gives life and causes death. So believe in Allah and His Messenger (Muhammad صلى الله عليه وسلم), the Prophet who can neither read nor write (i.e. Muhammad صلى الله عليه وسلم), who believes in Allah and His Words [(this Qur'an), the Taurat (Torah) and the Injeel (Gospel) and also Allah's Word: "Be!" - and he was, i.e. 'Îsa (Jesus) son of Maryam (Mary), عليهما السلام], and follow him so that you may be guided. "

(48) But those among them who did wrong changed the word that had been told to them. So We sent on them a torment from the heaven in return for their wrong-doings.

(49) Do they not look in the dominion of the heavens and the earth and all things that Allah has created; and that it may be that the end of their lives is near. In what message after this will they then believe?

(50) They ask you about the Hour (Day of Resurrection): "When will be its appointed time?" Say: "The knowledge thereof is with my Lord (Alone). None can reveal its time but He. Heavy is its burden through the heavens and the earth. It shall not come upon you except all of a sudden." They ask you as if you have a good knowledge of it. Say: "The knowledge thereof is with Allah (Alone), but most of mankind know not."