is there life one of the earth like planets?

Question

i dunno... if theres air and balanced temperature there must be bacteria or other things there..... just wanna know

Answer 1

We ALL just wanna know. And if there were, don't you think it would be ALL OVER the news? All we are doing is finding planets, no life yet.
This question is asked here about 15 times a day, please do your research.

Answer 2

There is no known life anywhere on this solar system (although some have speculated that Europa may have some. Probes are currently heading out there to see). We don't konw of any extrasolar planets that have the right conditions for life. If they did have it, it would take a lot of examination to find it. Currently the only life known to exist is that on Earth itself.

Answer 3

How I wish there is life in other planets. But until this point of time, our NASA people are still searching for such signs of life but the search yields negative results - no life yet is found!

To be more precise, there is no earth-like planet found yet.

Answer 4

Actually,in the future,you humans will discover many ways to travel faster than light and you'll be able to go far away in the distant,dark universe.

Answer 5

Its a possibility, however, you probably know as much as anyone as of yet.

Answer 6

We don't know... yet...

Answer 7

Theres this book called the Pale Blue Dot by Carl Sagan the Founder and Director of the SETI project ... do read it. Its beautiful. It talks about the Drakes Equation:

The Drake equation gives a means of estimating the number of civilizations capable of communication that are in the Milky Way Galaxy. Dr. Frank Drake devised the equation in 1961 while working on "Project Ozma", a search for artificial signals from two nearby stars. People involved in the Search for ExtraTerrestrial Intelligence (SETI) use the equation today to show that their searches are not in vain. (THIS PROJECT ALSO INSPIRED THE BOOK CALLED CONTACT BY CARL SAGAN WHICH WAS LATER MADE INTO A MOVIE BY THE SAME NAME, starring Jodi Foster)

This page is not meant as an extensive introduction to the Drake Equation.

Rather, it was sparked by a recent question I received about extending the equation to the rest of the Universe. I first cover, briefly, the components of the equation and what they mean. At the end, I discuss the possibility of extending the equation from the Milky Way to the rest of the Universe.

The Equation
The Drake Equation, as far as mathematical equations go, is quite simple. It consists of a string of unknowns multiplied by each other - that's it, no integration, no differentiation, nothing more difficult that multiplication. This means that the equation is accessible to pretty much everyone. Here it is:
N = R* fp ne f l fi fc L
Where:

R* is rate of formation of suitable stars (stars like the Sun) in the Milky Way galaxy
fp is the fraction of those stars that have planets
ne is the number of planets capable of sustaining life around each of those stars having planets
fl is the fraction of planets capable of sustaining life that actually evolve life
fi is the fraction of those planets where live has evolved that evolve intelligent life
fc is the fraction of planets with intelligent life that develop the capability to communicate
L is the fraction of the planet's life during which the intelligent life can communicate
The Values
The equation looks simple enough, but several of the quantities are unknown, even with our "advanced" knowledge of astronomy. In fact, the only quantity that we can currently say we know with any accuracy is the rate of star formation in the galaxy. Current estimates of the star birth rate in the Milky Way range from about 3 to 10 per year. However, the criteria that these stars be suitable means that they must be F, G or K stars, and these stars account for about 10% of the stars in the Galaxy. That means that 0.3 to 1 suitable stars are born each year.
Astronomers are currently able to detect large planets around other stars, so the fraction of planets with stars may one day be an observable quantity. However, currently only large planets can be detected, so the challenge is extrapolating the number of Earth like planets from the observed systems with large planets. In the not-too-distant future, we may be able to detect smaller planets around nearby stars. In fact, at least one project, Darwin , is underway to detect Earth sized planets around other stars, but it will take many years before this project gets off the ground (literally). Once we've detected extra solar, Earth sized planets, we can make more accurate predictions about how many planets per system are capable of sustaining life. For our own solar system, we would guess that three planets lie in about the right places and are of the right size to sustain life - Venus, Earth and Mars.

Detecting and predicting life on other planets is another order of magnitude (or more) more difficult than detecting Earth sized planets around distant stars. We are currently having a hard enough time determining if life ever existed on Mars, our closest neighbor. This means that all of the other variables in the Drake equation are subject to wild speculation. Fortunately, any of the "f" values are constrained to be between 0 and 1 (since they are fractions), so there is a definite upper limit to those values.

Let's take a stab at some of these numbers. Let N* = 1 (the most optimistic value given above), ne = 2 and L = 10,000 years (maybe a bit optimistic, since we've only been communicating for several decades). Let's try a couple different things for the fractional numbers (fp, fl, fi, fc)

If we let fp = fl = fi = f c = 0.5 (middle of the road), then N = 2,500
If we let fp = fl = fi = f c = 0.1 (one smallish side), then N = 20
If we let fp = fl = fi = f c = 1 (their maximum), then N = 20,000
What does this mean? Well, our Galaxy could be littered with intelligent, communicating civilizations, or we could be fairly unique. Hopefully, future studies of extra solar planets will help to constrain the planetary numbers. The "life" numbers, however, will likely be open to speculation for some time to come.
What About Other Galaxies?
Indeed, an estimate of the number of communicating civilizations in the Universe could be obtained by multiplying the Drake equation by another parameter, say Ng -- the number of galaxies in the Universe. In reality, this parameter isn't quite that simple. There are many kinds of galaxies in our Universe, and each different type would have a different star formation rate -- some galaxies produce many, many stars each year (galaxies currently undergoing "starbursts"), while some galaxies are nearly dormant.

The light travel time is a concern even with detecting signals from our own Galaxy. Sure, there are many stars that are less than 10 light years away, so we could hope to communicate with them and get a response within our lifetime, but what if we detect a signal from a civilization on the other side of the Galaxy? Our galaxy is 200,000 light years in diameter! So, just because we detect a signal doesn't mean that we will be able to "communicate". The light travel time becomes even more of an issue when considering signals from other galaxies. Our nearest neighbor (not including our nearby companion and dwarf galaxies) is Andromeda, with is about 2,500,000 light years away. If we were to detect a signal (which is unlikely, see the next paragraph) from there, the light would have been traveling for more than two and a half million years before reaching us!

The other consideration for looking for life outside our galaxy, is that the civilization in question would have to put out a whopping signal to make it reach across the space between galaxies. As a signal races across space, it loses intensity as one divided by the distance squared (like gravity), so even a very strong signal will diminish over the vast distances between galaxies.


Many science fiction movies, television series, and books were much enjoyed by me. In most of these books and mo, people had spaceships that allowed them to travel between different star systems, and on planets in these other systems, intelligent creatures lived that somewhat looked like people, but were different. We all know that reality is different from books. Physics tells us that strange things happen when we travel with a speed, somewhat close to the speed of light - and, if modern physics is correct, it is impossible for humans to travel between star systems. If other creatures live on other planets, then they have to face the same type of problems, so it seems impossible for them to travel from their planets to ours. So, if there are intelligent creatures living on planets in other star systems, it seems, according to modern science, that we won't meet them.
But, are there planets with other living creatures in this universe? And if so, are there intelligent creatures on other planets? Some people are fascinated by the thought, and quite some effort is spent to try to see if such creatures are there. For instance, there is the SETI at home project: a project where one tries to see if in the some random noise coming from space to earth, there is some pattern to be seen that comes from a civilization on some other planet: SETI means: the search for extra-terrestial intelligence: looking for intelligent beings not from this earth. One of the arguments for the expeditions to the planet Mars that were given is that these may help to search for life on Mars.

I do not understand why people make these types of efforts. If there is life on other planets, how did it originate? I see three hypotheses:

On the other planet, life started in the same way as the evolution theory says that it started here. Apart from the fact that the evolution theory is not the well-rounded and totally scientifically proven theory that people want us to believe (I've written things elsewhere), in general, followers of the theory tell that the chance of life starting on a planet is rather small. A term used is sometimes: A magnificent accident. I believe the probability is even smaller than they say, too small to assume that it actually can have happened by accident, but even if you believe life on earth was such a magnificent accident, the chances that this has happened more than once are too small to assume that that can have happened.
Life on different planets has a common origin. Say, some very primitive form of life originated somewhere, and it then travels from there also to some other planet, developping there to some intelligent form of life too. There are quite a lot of questions to be asked to such a theory, and, again, calculating the probabilities seems to make the theory unlikely.
Life on earth has been created by God. Possibly, God also has created life on other planets. If God has created life on earth, he may have created life on other planets too. As far as I can tell, the Bible does not say something about this, so this remains possible. If there are intelligent beings on other planets, I would assume they would know God. Would they also have a fall to sin, like the humans? Would we meet them in heaven? Would there be atheists and religious extra-terrestials? We cannot know.
So, if there are extra-terrestial intelligent beings, or, even, other types of life on planets outside our solar system, then to me, that would be a new proof of the existence of God. But, I cannot understand atheists that sincerely state they follow standard evolution theory and are at the same moment on a search for intelligent life on other planets.

Finally, is there life on other planets in our solar system? Well, I guess, yes: probably on Mars, there now will be bacteria brought to the planet from earth by one of the Mars-expeditions that were recently carried out.