Genesis 1:1
"In the beginning God created the heavens and the earth."
I see this as one colossal act of creation, bringing all the material universe into existence in what science calls "the Big Bang".
I see all heavenly bodies in the same condition...raw and new....devoid of anything that could support life.
"2 Now the earth was formless and desolate, and there was darkness upon the surface of the watery deep, and God’s spirit was moving about over the surface of the waters."
The one thing that makes Earth different to all the other planets in our solar system, is water. They call it the Blue Planet for obvious reasons...
There is no other planet like it orbiting our sun. Water was already present in verse 2.
The conditions on Mars are not hospitable to life at all. No water is visible on the surface at all. Though scientists speculate that there is ice. They do not know if it is frozen water because it never melts.
No obvious life is present on any of the other planets either.
The lunar landscape is also desolate and devoid of life.
I see verse 2 as describing a planet completely covered in water, "formless" with no mountains or valleys of any height or depth...just completely immersed in water. "Desolate" can simply mean "empty" since there was no life of any description as yet.
It was dark because no light was yet shining on the surface of the planet, yet the heavens and the earth were created in the same act, meaning that the sun was already in place, just not visible from the earth's surface.....so the first thing God did was to make light from the sun penetrate the cloud layers but it was not completely visible as yet. So on the first day, everything was set, for the events of the next "day" *
"3 Then God said: “Let there be an expanse between the waters, and let there be a division between the waters and the waters.” 7 Then God went on to make the expanse and divided the waters beneath the expanse from the waters above the expanse. And it was so. 8 God called the expanse Heaven. And there was evening and there was morning, a second day."
The whole of the second "day" was devoted to making a separation of the water, creating an "expanse" between the water on earth and water that was held above the earth's atmosphere.
We get an idea of how this was done from the apostle Peter...speaking about those who would ridicule God's worshippers at this time of the end, he said in 2 Peter 3:5-6...
"For they deliberately ignore this fact, that long ago there were heavens and an earth standing firmly out of water and in the midst of water by the word of God; 6 and that by those means the world of that time suffered destruction when it was flooded with water."
This volume of water, capable of flooding the earth again was used in the days of Noah.
In creating a water canopy above the earth, God shielded it from a great deal of radiation from space. It would have also offered the earth a uniform climate, moist and humid and conducive to life. According to Genesis 2:6 a mist watered the surface of the earth.
The third "day" saw oceans and seas divided by dry land appearing out of them, so there must have been a great upheaval in the earth's crust, making deep ocean ravines and causing great mountain ranges and land come up to displace the water.
The first "life" to appear was the vegetation....all accomplished on "day" 3. And so forth.....
* Please note: I do not believe that the creative "days" were 24 hour periods, but rather eons of time with great care in the crafting of everything in each time period.