Is it possible we could be related to aliens in some scientific way?????

Answer 1

Yes. We are related by Evolution

Answer 2

It's possible but very improbable. Throwing out the chance of intelligent aliens who are crafty enough to achieve spaceflight but don't return our calls, the most promising current theory is cometary seeding.

Under this theory alien bacteria from a life-supporting solar system could travel to other solar systems through comets, the only objects that regularly leave/enter solar systems. Under this theory, the original bacteria, traveling from solar system A to solar system B, would:
1) have to get on a comet somehow. It could either:
a) find a way to evolve on the comet (unlikely, but comets do have a lot of water/ice) or
b) have been knocked off a life-supporting planet by a major collision and been swept up by a comet. (also unlikely- for the collision to propel chunks of planet A to escape velocity it'd have to be very powerful and would likely destroy the bacteria. Then again, some bacteria are amazingly hardy.)
2) The comet would spent most of its time orbiting in the dark outer reaches of the Solar System, the Oort cloud. Here the bacteria would have to survive for a Very Long Time in the cold vacuum of space. This could take a few million years.
3) Eventually, a sun of sufficient mass would have to pass close enough to the sun to perturb the comet into a hyperbolic orbit that would escape the solar system.
4) The comet would have to keep traveling and hope to run into another planetary system, which is the proverbial needle in a haystack. Moseying along at significantly less than the speed of light, even if pointed directly at the nearest star system, this could take a few thousand years.
5) Lets say the comet falls into solar system B's gravity well. It'll start orbiting in B's Oort cloud with the other comets for a couple million years.
6) ...until a solar-sized mass passes nearby and alters its orbit to one that reaches into the inner solar system.
7) This orbit needs to eventually hit a planet, another needle in a haystack, before repeated passes through the solar system burns away all the comet's water.
8) The bacteria on the comment needs to withstand entry into the planets atmosphere(if it has one) and survive an impact that liquefies rock.
9) The planet needs to be able to support the bacteria's life-processes and awaken it from hibernation.

But hey, it's a big universe. Anything's possible.

Answer 3

Are there Aliens?

If there are then I suppose if they left a few of their life forms on earth we coulb be related. I think this idea is very remote though. We can see our evolution through fossils for a million years, so the aliens would have had to been primates for some sort. The issue that comes to play is the primates we find in fossils do not have a brain large enough to create a spacecraft to get them here. So we probably do not come from aliens. Now maybe so aliens had some pets they visted and the pets got away and evolved into us. Maybe the are related to aliens pets

Answer 4

However remote the possibility may be, it is possible. Some theories suggest that a cataclysmic impact such as from a large meteor striking a planet could eject planetary mass into space. It is possible that this happened on another planet with life, some simple forms of life were "trapped" on some of the ejected mass, became frozen and drifted across the cosmos for millions, even billions of years. At last the mass struck earth as a meteor and some of it didn't burn up on entry. The simple life forms thawed out and...voila 3 billion years later here we are.

Answer 5

Unless and until we have some alien specimens to analyze, particularly their DNA, any answer here would be pure speculation.

Offhand, though, I would consider it extremely unlikely to the point of being unworthy of serious consideration. There is a theory called panspermia which posits that life can travel from world to world via rocks that get blasted off of one and land on another. But I've found the arguments supporting panspermia to be extremely lacking from a scientific perspecitve.

Answer 6

There is a theory called panspermia which suggests that DNA came from other planets. Though I am skeptical, it is certainly possible we could share portions of an aliens DNA.

From Wikipedia: Panspermia is the hypothesis that the seeds of life are ubiquitous in the Universe, that they may have delivered life to Earth, and that they may deliver or have delivered life to other habitable bodies; also the process of such delivery.

Answer 7

Yes everything we and an alien would be made up of came from the heart of a star.

Answer 8

no it is probable. it is thought that when the earth was still a boiling mass of malten rock, a chunk of ice that was circling through the universe struck our liquid planet causing a huge rush of gas as the ice evaporated. this was the origin of our atmosphere and most probably where the chemical reaction to create life came from.

Answer 9

Yes, and the Battlestar Galatica is still out there, looking for Earth.

Answer 10

Since we do not know if aliens exsist yet, how can we know anything about them to know if they are related to us. If you know one, please let us know. And I am not talking about US immigrant aliens.