These were recorded to be evil in the book of Enoch and refusing to yield to 'God's will' they were always in trouble. This ruling species , the "Gods" as they were referred to, they were one species and culture living on Mars and they didn't get on well at all with the species and culture of Marduk.
It is not known if they intended to do this or not. All we know is that it happened.
This explosion formed today's asteroid belt and wiped out completely one entire side of Mars and the atmosphere of Mars was also diminished such that many lost their lives on that planet. Our moon was reportedly somewhere in the vicinity of Mars when this planet Marduk exploded! This is how the majority of the damage to the moon supposedly occurred.
Mars was completely shocked and ruined and now a dying planet, and the moon was one of their ships, now with lots of damage and suddenly the earth was the only living planet left in the solar system! The only problem was the earth was abused over and over and over through time because it was never respected or cared much for other than it's value as a mine until Mars was nearly destroyed!
The earth was a geological wonderland they mined and it was a quarry basically used for the mineral wealth they could generate and regenerate over and over again. It was used as a means to make valued things for the various species of the universe that would purchase them.
The planet grew living organisms for a reason and this organic carbon based life was filled with water which was the main ingredient other than carbon both of which was something their technology could use as fuel. Their fuel was hydrogen and they would blast the planet with plasma shots which used the water in the living organisms for fuel and fossilized everything it scorched and nearly instantly and then they would come in and mine out the agates and gems from this what used to be living trees, plants and animals. Entire corral reefs were turned into petrified stone and shallow oceans dried up as fuel nearly all over the earth in repeated cycles.
Then they grow it all back up again lush and green with new life that has no clue what is coming and when it is mature and ready they pack up and come in and do it again. Well that cycle of growth and quarry out all stopped after the great war in heaven described in Revelation. Enoch tells how this all took place because suddenly they needed the earth also describing how they cleaned it in a varied way you have to understand. The earth was 'cleansed' and that meant the quarry was not used and it was regrown to support the survivors. The fallen angels were dealt with and in the end they pulled wise men from every tribe of the survivors brought to earth and taught them the story of how the war in heaven made all this happen.
The entire story of our hybridizing and creation is true. We could not just come here because everyone had different reproductive cycles so mating with existing life was needed to adapt the Mars survivors over time. Some of the fallen angels mated and produced wives and children and these as described were different. Some of the sons survived, these are the hybrids with RH negative blood type mostly royals today and these were provided wives but none were provided for the angels and this so the sons left would not want. The earth is a protected zone never to be threatened or breached due to the mistake they made in the past they do not want repeated. The Watchers of heaven still maintain the earth garden for us to thrive and will continue to do so according to the book of Enoch.