How long do stars usually live?
485969
There are lots of different types of stars, all with different 'lifespans'. Ours is about 4.5 Billion years old and should 'live' to the ripe old age of about 10 Billion years old.
251053
There are ~200,000,000,000 stars in our galaxy. There are at least 80,000,000,000 galaxies in the universe, and reasonable estimates are from 80 billion to 400 billion. Estimates of the total number of stars in the universe that I've seen start around 3 followed by 16 zeroes, and a reasonable approximation would be in the neighborhood of 4.8 x 10^22.\n\nNow, we don't know of a single star that is known to NOT have planets; in fact, any planet within an order of magnitude or two of the mass of Earth is far too small for us to even detect, with the exception of those in very unusual systems, such as the one in the link below, which orbits a pulsar (it's also 1/5 the mass of pluto, but even if it were Earth-sized, a pulsar probably wouldn't be very conducive to life forming).\n\nWe also don't know exactly what conditions it takes to form life, how long those conditions need to last, or how long planets normally stay within that range of conditions.\n\nHowever, we can make some estimates.\nThe sun is a G-type star, and, although F-K type stars might be capable of supporting life (and such make up ~64% of the stars in the galaxy), we'll ignore everything but the 18.7% of stars which are G-type.\n\nFurther, let's say that only 1 in 10,000 G-type stars has a planet capable of forming life.\n\nNow, there is, on average, about 1 supernova per galaxy per century, so we'll have to eliminate some candidate stars on that; say about 99% of eligible stars do not form life as a result of radiation bombardment from nearby supernovae.\n\nThen, let's estimate that it takes 100,000,000 years for life to form, and the average planet only has 4,000,000,000 years of its lifespan where life can survive. Then, we have to figure out how many planets have life at any given time. The approximate lifespan of the sun is 10 billion years, so we'll figure that's about average for a G-type star.\n\nWe'll assume that no star has more than one habitable planet, and that no life colonizes any other planets. Then, we'll figure that only 1% of the planets which are still eligible actually have life.\n\nThat still leaves 3-4 planets currently inhabited, in our galaxy alone, including Earth. Multiply that by, oh, say, 1% of the minimum number of galaxies in the universe (just for the fun of it), and we still get nearly 3 billion currently inhabited planets.\n\nSo, I'd say that the answer is a pretty resounding "yes". Although most of them would be extinct long before we could concievably detect their existence, and even if not, they would be extinct for many millenia before we could communicate with them.
708208
The sun is a star and so it will have its time when it will die, so I believe that if something can die then it must be alive.
412803
That depends on the species; typically larger forms live longer, but there are many factors that influence longevity.\nHere's a webpage with documented longevity records, look at those for order Primates:\nhttp://www.demogr.mpg.de/longevityrecords/0203.htm
446754
They can live for 50 years.  These links will help answer all your other questions:\nhttp://www.aolsvc.worldbook.aol.com/wb/Article?id=ar303960&sc=-1\nhttp://www.nature.ca/notebooks/English/komodo.htm\nhttp://www.honoluluzoo.org/komodo_dragon.htm
738025
The Sun moves quite fast around the center of our Galaxy, at a speed of about 800,000 kilometers per hour (500,000 miles per hour).  Even still, it takes the Sun about 250 million years to complete one orbit!\n\nA few years ago, the most massive star was the Pistol star.  It's about 100 times more massive than the Sun is.  In fact, any star that massive won't be stable.  The Pistol star got its name because it is the source of the Pistol nebula - the Pistol star is unstable and is constantly blowing off material, material we see as the Pistol nebula.\n\nWhen a star begins to "die" it expands into a red giant or red supergiant.  The largest (in size) supergiants can be larger than the size of Jupiter's orbit.  Such a star won't last too long (only a few million years, if that) before it explodes as a supernova.
406243
very long. this is because the sun is a very large star and will take billions or rather trillions of years. when it does burn out however, it will be big enough to swell so big that it will swallow mercury, venus and possibly earth ^^ good luck
893069
The sun will get slowly brighter over the next few billion years.  Then, it will go through a red giant phase of expansion and contraction that will last another few hundred million years.  Finally, the outer envelope will blow off revealing a white dwarf that will slowly cool over several more billion years.
1045802
no they are not useles b'coz they act as \n1.diamonds on the dark ocean\n2.they lead the sailors to the right way\n3.sometimes when u feel sad u can look at the stars then u surely feel relaxed.\n              Scientificaly stars are huge balls of gases and are part of universe.\n              Astronomicaly stars have a very important role in life as all the zodic signs are depended on them.\n              Yes, stars have life, not like us,they take birth and dies but it takes a lot of time you cannot experience this.u can ask this from anybody who studies physics
645894
No, main sequence stars (like our sun) last for about 10 billion years. It has lived for about 5 billion years or so, which means the sun has another 5 billion more years to live. After those 5 billion years are over the fusion process is stopped (due to the lack of hydrogen). The star collapses on itself and makes the star even hotter. All that heat fuses the helium and the star expands into a red giant. It will last in this form for another 100 million years or so. Then the outer layers of the red giant comes of creating a planetary nebula. Then after that gas is gone all that is left is the hot core or the white dwarf. The white dwarf cools and becomes a cold dead core (Black Dwarf)
23553
Star's are for the most part the same as our star/sun. The difference being we named our star The Sun.
1148057
it depends on what kind of fly it is.  some flys life expectancy is 24 hours,  i do believe that a normal house fly though will typically live 48 hours.
703897
Actually, most stars are binary. Most clusters of three or more stars is a relatively short-lived (cosmologically speaking) association that usually deteriorates to binary systems. When the cluster "sheds" its extra companions, these extra companions will either pair up with another single, if sufficient gravitated to each other, or in less frequent case, remain a single star.\n\nThe size of any star is determined by several factors, such as availability and composition of the nebula from which it is formed, any other forces, or field, that may exist in the nebula, etc.\n\nThe super giant is usually the shortest-lived star. Its life span has to do with the rate of fusion within the star and that is dependent upon the surface area as opposed to the volume of the star.
513526
Gerbils usually live 3-4 years. Have a nice week. :)
1157839
The average life span of an adult butterfly is one to two weeks, but it can be as brief as two days or as long as a year
219187
I do.  There are at least 7*10^22 or 70000000000000000000000 stars out there, so how could anyone really think that only one of those stars have life.  It has been estimated that there are about 1 billion planets with life on them in the entire universe.
440640
The average lifespan for a wolf in the wild is only 9 years. Wolves in captivity live much longer. They reach sexual maturity at about 2 years of age and have finished growing.