Do you think there is life on other planets?

Answer 1

Yes and here is why .......


The Drake Equation was developed by Frank Drake in 1961 as a way to focus on the factors which determine how many intelligent, communicating civilizations there are in our galaxy. The Drake Equation is:
N = N* fp ne fl fi fc fL

The equation can really be looked at as a number of questions:

N* represents the number of stars in the Milky Way Galaxy

Question: How many stars are in the Milky Way Galaxy?
Answer: Current estimates are 100 billion.

fp is the fraction of stars that have planets around them

Question: What percentage of stars have planetary systems?
Answer: Current estimates range from 20% to 50%.

ne is the number of planets per star that are capable of sustaining life

Question: For each star that does have a planetary system, how many planets are capable of sustaining life?
Answer: Current estimates range from 1 to 5.

fl is the fraction of planets in ne where life evolves

Question: On what percentage of the planets that are capable of sustaining life does life actually evolve?
Answer: Current estimates range from 100% (where life can evolve it will) down to close to 0%.

fi is the fraction of fl where intelligent life evolves

Question: On the planets where life does evolve, what percentage evolves intelligent life?
Answer: Estimates range from 100% (intelligence is such a survival advantage that it will certainly evolve) down to near 0%.

fc is the fraction of fi that communicate

Question: What percentage of intelligent races have the means and the desire to communicate?
Answer: 10% to 20%

fL is fraction of the planet's life during which the communicating civilizations live

Question: For each civilization that does communicate, for what fraction of the planet's life does the civilization survive?
Answer: This is the toughest of the questions. If we take Earth as an example, the expected lifetime of our Sun and the Earth is roughly 10 billion years. So far we've been communicating with radio waves for less than 100 years. How long will our civilization survive? Will we destroy ourselves in a few years like some predict or will we overcome our problems and survive for millennia? If we were destroyed tomorrow the answer to this question would be 1/100,000,000th. If we survive for 10,000 years the answer will be 1/1,000,000th.

When all of these variables are multiplied together when come up with:

N, the number of communicating civilizations in the galaxy.

The real value of the Drake Equation is not in the answer itself, but the questions that are prompted when attempting to come up with an answer. Obviously there is a tremendous amount of guess work involved when filling in the variables.

Answer 2

Isn't it odd how people must answer this question on Yahoo
Questions and Answers about five times per day, each and every day? It seems that people just never do a search to see if that question has been asked before.

A.) The probability that there are one or more Earthlike Planets somewhere out there in the Universe is very high.
There are 200 Billion Plus stars in the Milky Way Galaxy which could have solar systems of ten or more planets with moons just like our Sun does. One or more of those solar systems could have an earthlike equivalent within it.

Beyond our Galaxy there are thousands and thousands of other galaxies with each one of them having many billions of stars also. Each one of them could have a solar system with up to ten (or more) planets and moons orbiting around a star. And any one (or more) of those solar systems could have an Earthlike equivalent planet with all the various capabilities to support life as we know and understand it.

However, you should not expect to see friendly, little people with lovely children out there on some distant planet that are carbon copies of us. Most likely the "life" we speak of will turn out to be strange insects, fish, or various birds. On some planets the evolutionary process might have been wiped out and only just now beginning again. So, on those planets, life might just be in the bacteria and mold development period.

Answer 3

yes, google India Blood Rains, read some of the articles about the mysterious red water that fell in India in 2001. The red color in the water was caused by red cells never before seen on Earth. These cells have very thick cell walls, lack DNA, and yet can reproduce rapidly, even in 600 degree Fahrenheit water. Scientists now believe that the cells came from outer space, perhaps on a comet that was destroyed when it entered out atmosphere, causing the cells to fall into a rain cloud. If these scientists are correct, it will prove for the first time that life exists in outer space. Obviously these cells are not intelligent life, which is what most people think of when they think of life on other planets (you know, little green men with laser guns). But if these cells exist in outerspace, then other forms of life must also exist.

Answer 4

Yes. I don't see what's so special about Earth. And if anything was special, it is gone now. Destroyed by us. There even could be life on the dark side of the moon. Why not? If life can be on the earth why not the moon and other planets? They might just need a different environment than we do. Different gases, or perhaps no gas. Hot climate. or maybe really cold. There is life on other planets and somebody is bound to find it sooner or later.

Answer 5

well yes i do but we dont know what kind live out there lol we ve fount other planets but some we havnt yet reached Given that life cannot exist on all planets and that it does on ours, without further information we have to conclude that life is more likely to exist on a planet similar to ours than on those that are dissimilar. Life requires stable conditions to enable reproduction and then evolution. It requires a stable and consistent mix of chemicals so that life can start. Without this stability, life can never evolve to be able to cope with instability.

Carbon is the most likely source of organic material on most planets due to the ease at which it is formed during planet formation and its readiness to form complex and predictable molecules. Given that carbon is likely, so are the rest of the necessary molecules such as hydrogen, oxygen and nitrogen. It can be noted that all the molecules of life are also the most abundant in the atmosphere in which we live.

Life is probably on stable planets with an atmosphere (or local areas of atmosphere) that contain these chemicals. It will, just like life on this planet, evolve to use the most efficient methods possible for its own reproduction. Life on this planet, over millions of years, has sought to do the same thing. We can draw the conclusion that as nearly all higher cells use similar methods that these reactions may be the most efficient way of fuelling carbon-based life form's cycles. Therefore it seems that similar metabolic paths will exist in alien life as in ours; similar sugars could be used. Similar excretion could exist, as will a similar food chain.

One can be confident in stating that life on other planets will utilize many of the same reactions as we do in our cells - both driven by the fact that those who are most efficient sooner or later dominate the population. There is no doubt that aliens would have efficient organs and organelles that carry out specific tasks, like our cells do.

Life could indeed by quite similar to that which we see here. It won't have evolved the same species or phenotypes but we could be certain of seeing 4-legged animals, birds, fish, etc, the same basic classes that we have on Earth, and even a similarity in cellular (or pseudo-cellular) structure.

hope this helped you

Answer 6

I can easily answer this question because everybody always wonder if there is life on other planets. Earth is the only known planet that is capable of supporting life, but elsewhere in and beyond the solar system, astronomers and scientists are not sure. To see if life ever exists beyond Earth, let's go looking for answers to the inner and outer planets first before heading outside of the solar system.

We are now in the inner planets. Earth's moon is a dead, barren world that has no atmosphere to support any lifeform. Mercury and Venus are too close to the sun that life could not survive the extreme temperatures; an astronaut traveling to either of these planets would be burned to death. I've heard about recent discoveries that space probes did find some evidence of bacterial lifeforms of some sort on Mars, concluding the fact that life exists, or existed, on the red planet. Before space probes were sent out to Venus and Mars in the 1960s and 1970s, science fiction writers wrote stories about Venusians and Martians inhabiting their home planets; however, now that the probes explored the two planets, we now know that no intelligent beings ever existed on the two.

Next, let's go to the outer planets. For years it was thought that life could never exist on Jupiter due to the extreme temperatures, atmosphere, and absence of a rocky surface, but all that has changed. Scientists believe that ammonia, hydrogen, and other heavy elements that existed during the formation of the Earth could possibly result in lifeforms flying above Jupiter's clouds. We're not sure about any possible life on Jupiter, but if we send space probes there, then we'll find something living so that our facts would be proved. On Jupiter's moons Europa and Ganymede, where there is frozen water and possibly an atmosphere, it is possible that life could exist in these two. We're not sure if life ever exists, or existed, on Saturn, but on one of its moons- Titan- there is an atmosphere that is probably capable of supporting life. Uranus and Nepture are far away from the sun, so it's impossible that life in any form could never exist there. And although Pluto is no longer a planet (and now a dwarf planet), we all know that life could never survive there because of its distance from the sun.

Now let's go out of the solar system and go to the farthest stars. Many stars are solar systems, and some of them have habitable planets like Earth. It's possible that life- and intelligent beings similar to humans- could ever exist. I've heard of numerous reports of UFO and alien sightings in books, and this proves that we, the planet Earth, are not alone in the universe.

Here you go, my friend, is a long answer to your above question.

Answer 7

Yes. They are on planets and also on spaceships in interstellar space. I don't think an advance life form needs to be bound to a planet. They probably only need access to raw materials because they mostly likely can fabricate anything they need from chemicals.

Answer 8

Not on other planets in our solar system, but probably in the many planets in the universe. Distances are too great for us to ever meet them. No matter can travel anywhere near the speed of light. that stuff is only in fiction. The nearest star to our Sun is Proxima Centauri. If a rocket left Earth at escape velocity, it'd take 106,448 years to reach Proxima Centauri. Other stars are much farther away than the 3 of alpha centauri. See why UFO's are hoaxes and misidentified normal things?

Answer 9

The answer is......47!!!,seriously though ,why don't we forget the "adam and eve" ideals and realise that we are also aliens??As there is no""Proof"" of our own genetic downline..(either evolution,or religion).....just accept that as we have the technology now to explore and visualise distant stars and their possible surrounding "life bearing" planets,don't you think that others had the same perception as ours a few millon years ago??......So why not come this planet and create stone circles,pyramids etc...We would simply "alien invate" any planet within our reach(with todays technology!)

Answer 10

yes i think there is the chance of life being on another planet.

the problem is, i don't think it is possible that we will ever discover it or they will discover us. our universe is so vast that even if we could make ships that traveled at the speed of light, you would essentially have to colonize a ship and have many, many generations survive to ever reach a far away planet. how could we possibly get enough food and fuel on a ship to ever go that far?