Matt 24:29-30 is about the Lord’s judgment that will happen after Jerusalem is destroyed, Jerusalem was destroyed in 70 AD. Matt 24:29-30 is not speaking about the end of the planet.
The words that are spoken in Matt 24:29 are a picture of judgment, the stars won’t literally fall from heaven, the Messiah is using words that the disciples knew come from the Old Testament that describe judgment.
Matt 24:29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken.
Matthew 24:29 is symbolic for judgment, for the vindication of the new covenant over the old covenant, and their respective members, and the Messiah’s new reign
The combined imagery of sun, moon and stars reflects complete political entities. the Messiah’s prediction refers to nothing more or less than the judgment upon the nation of Israel.
Isaiah 13:10 For the stars of heaven and the constellations thereof shall not give their light: the sun shall be darkened in his going forth, and the moon shall not cause her light to shine.
Ezek 32:6-8 I will also water with thy blood the land wherein thou swimmest, even to the mountains; and the rivers shall be full of thee. And when I shall put thee out, I will cover the heaven, and make the stars thereof dark; I will cover the sun with a cloud, and the moon shall not give her light. All the bright lights of heaven will I make dark over thee, and set darkness upon thy land, saith the LORD.
In Matt 24:30 the statement “and they shall see the Son of man coming in the clouds of heaven” is referring to Daniel 7, the Messiah spoke that statement to the disciples because he knew that they would understand that he was speaking the words that are written in Daniel 7 that describe judgment.
Matt 24:30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
Daniel 7:13 I saw in the night visions, and, behold, one like the Son man came with the clouds of heaven
Matt 24:29-30 is speaking of the Lord’s coming judgment that would happen after Jerusalem was destroyed, the destruction of Jerusalem is the “tribulation” that the Messiah speaks of in Matt 24:21, Jerusalem was destroyed in 70 AD. Matt 24:29-30 is not speaking about the end of the planet.
Here is a link to my post that will explain more about the “tribulation” that is spoken of in Matt 24 https://bornfromabove7.wordpress.com/2014/09/17/matt-24-isnt-about-the-end-of-the-planet/