the question is bit long .........but do ans it ?

Question

will it be ever possible for life forms to evolve in other planets ..........after decades and hundreds of years but will it ever form?............serious ans only

Answer 1

We know of 205 extra-solar planets.

We reckon there are 10^11 galaxies

If each of those galaxies has an average of 213 planets that would be a total of 2.13 x 10^13 planets, It seems probable with 21 trillion planets, that more than one of them will harbour life.

Main conditions to satisfy:

(1) it needs liquid water and therefore a temperature range on the panet such that water is neither ice nor steam.

(2) not too much harmful radiation from either the star itself or the black hole at the centre of most galaxies, plus protection from such radiation as there is (eg our ozone layer),

These two ideas lead to the idea of a Habitable Zone, where the development of life is possible. Not too near to a star, not too far away, and not too near to the galactic centre.

Life-forms elsewhere may not be carbon-based like we are. Silicon has many similar properties to carbon though it is not quite as abundant as carbon throughout the universe. So silicon-based life-forms are definitely a possibility, though they are probably rarer than carbon-based ones.

Read widely and find out more!.

Answer 2

Although there is no evidence whatsoever that there is any life except on earth, a lot of biologists are beginning to think that it probably does exist elsewhere. It seems prettly unlikely that life can exist without liquid water but most biologists believe that if you have liquid water and a reasonable collection of minerals, life definitely will start. We used to think that the water needs to be at a moderate temperature, but now that we have found organisms living in very hot volcanic springs and within rocks in the frozen Antarctic, the view of what kind of conditions can support life has changed. OK, so you need liquid water. How many planets have that? Not Venus, it's too hot. Maybe Mars, and maybe there are spots on Jupiter and other large planets where some of the surface has liquid water. So, yeah, maybe? Also, there was a recent article giving some convincing evidence that many of the planets that have been identified around other stars are "warm giants" sort of like Jupiter, that could have liquid water. And we now believe that there are many more of these planets than was formerly thought. So, that increases the chances quite a lot. Wouldn't it be great if we actually found some life outside the Earth!

Answer 3

I know it is not easy if you live in the suburbs or a town , but if you can get out into the country just go and lay down on the ground for a minute on a clear starlit night and try and count the stars. And those are just the ones we can see.....

How can we possibly be so arrogant as to think that we are the only intelligent life form around in the universe, indeed the only life form full stop?

Why do the building blocks for life on earth have to hold true for other planets? We are not God to know that for certain.

Embrace the possibility! It puts humans back in their proper place, somewhere we haven't been for the longest time!

Answer 4

Biologists generally think that any planet where liquid water can exist will evolve life (in bacterial form). It happened here after about five hundred million years or so. Whether multicellular life would evolve or not is another question -- we just don't know. It took almost 1.5 billion years to happen here. And whether intelligent life like us would evolve is even more problematic; after 4.5 billion years, it only happened once on this planet. Most biologists believe that it was an accident.

Answer 5

While we have not discovered any life on an alien planet, it is certainly reasonable to assume that it would evolve. Evolution is so basic to life that the capability to evolve has often been suggested as one of the defining characteristics of any living system. (Here is an earlier entry on the definition of life: "While there are many contending definitions, one that is generally accepted comes from Bruce Jakosky's book, "The Search for Life on Other Planets." NASA scientist Jakosky defines being "alive" in general terms if the object 1) utilizes energy from some source to drive chemical reactions, 2) is capable of reproduction, and 3) can undergo evolution. Of course, this definition is subject to several complications. For example, fire can reproduce itself, contains heat energy, and uses biogenic elements (carbon, hydrogen, oxygen, nitrogen, phosphorous, and sulfur). And yet, fire is classified as a byproduct of non-biological chemical reactions in part because it cannot evolve. In fact, another definition of life by geologist Joseph Kirchvink emphasizes evolution as the only defining characteristic of living objects versus non-living ones."

Answer 6

It may already have happened. There are billions of stars and some will have planets like the sun does in our galaxy. That gives a lot of scope for some form of evolutionary lif to occur on other planets

Answer 7

For serious answers you need to ask serious questions. A question asking for life forms "in" other planets cannot be serious, because it should be "on". Furthermore, it doesn't take decades nor hundreds of years, if at all, it takes hundreds of millions of years to evolve.

Answer 8

Hi. I would be quite surprised if Jupiter had not evolved some kind of life. There are layers in it's atmosphere that have Earth-like temperatures, and pressure does not seem to restrict life. Look at the under sea vents.

Answer 9

If it did it here why don't you think it would do it else where? The actual probability of life occurring is uncertain but we have proof of at least one planet developing life and evolving so why not another

Answer 10

yes just as it has here. We just have to find the planet with the right atmosphere to sustain basic forms of life