Life as we know it and where it came from . . . and speculation
I have a theory based on nothing more than a hunch. What if life is universal? By that I mean that instead of life originating on this little planet, it has been going on for billions of years. What if life comes to a suitable planet, then proceeds to terraform it into Earths similar to our own. Also this “life” has a common origin throughout the entire galaxy. Wow! Wouldn’t that be something.
It implies that with a common origin you have a common system of genes and chromosomes possibly interchangeable with forms from other planets similar to our own.
Translated: we might be able to eat the plants from other planets if we ever find life on other worlds. My hunch comes from something Jesus said in the Bible. In my Father’s house, there are many mansions. I think he was talking about Earths similar to our own. God may have created other Earths all over the galaxy. It is estimated based on current knowledge that approximately 40 million planets may inhabit our galaxy.
But if there are Earths out there similar to our own that implies there might be human beings on those planets. Not to worry, the distances between solar systems is enormous. Even at the speed of light, it would take 4 and 1/2 years to approach the nearest system to us that we know about. That would be Alpha Centauri in our Southern skies. It is a triple star system. It is unlikely to hold an Earth-like planet due to the nature of the orbits of the stars. But it is possible. Just not very probable.
No one knows what lies in wait between the Stars. Theory indicates there might be a lot of rogue bodies with no light or little light reflected off of these bodies. Some might even be the size of Jupiter or as small as Mercury. Traveling at or near the speed of light might be hazardous if there is a lot of matter out there.
Venus seems to be a candidate for being a rogue planet that wondered into our solar system in the past. It spins the opposite direction to the Earth. The day is longer than the year. It has an extremely dense atmosphere and it is very hot. There is some circumstantial evidence that it might even be new to the Solar System and took up its current orbit within the memory of man.
It is what Earth might have been millions of years in the past. The real problem with finding another planet like our own is distance between the stars.
Earth appears to be unique. We have a large moon orbiting the Earth. No other planet has a large moon like our own in our solar system. The closest would be moons larger than Mercury around Saturn and Jupiter. It is possible that there might be a planet hidden behind the Sun. But it is a small possibility. An Earth-sized planet would leave gravity anomolies and shift the orbits of Mars, Mercury, and Venus as it moved past them.
Earth shows signs of being a much larger planet early in our history. There is a lot of water here. Much more water than should exist on a planet of this size. At least that is what the scientists think.
A Neptune sized planet that collided with a Mars sized planet might have caused the distribution of a lot of small planets and moons in this solar system. Especially if the planet in question was mostly hot lava.
In Job, God declared that he created the Earth and the Heavens. It is not much of a guess that he might have created a lot more. If he used the same plan on other solar systems, there might be a lot of Earths similar to our own with basic life parallel to our own.