Prior to the Day of Judgement, the sun will enter the red giant phase with reduced surface temperature, expanding to reach the earth's orbit and engulfing the moon!
The low gravitational forces will destabilize the universe during the time?
Verses 6-10 of Chapter 75:
He questions: "When is the Day of Resurrection?" At length, when the sight is dazed, And the moon is buried in darkness. And the sun and moon are joined together,-On that day man will cry: Whither to flee!
Verses 1-6 of Chapter 81
When the sun (with its spacious light) is folded up; When the stars fall, losing their lustre; When the mountains vanish (like a mirage); When the she-camels, ten months with young, are left untended; When the wild beasts are herded together (in the human habitations); When the oceans boil over with a swell.
Verses 13-18 of Chapter 69
Then, when the Trumpet is blown once, and the earth and the mountains are razed and crushed into pieces with a single stroke, on that Day shall the Inevitable happen. On that Day the heaven shall split asunder, and its system shall loosen. The angels shall be on its sides and eight of them on that Day shall be upholding the Throne of your Lord, above them. That will be the Day when you will be brought forth: no secret of yours will remain hidden.