The only stars that we can see individually are those that compose our own galaxy, the Milky Way. The Milky Way is estimated to contain anywhere between 200 and 400 billion stars, although many of these are not visible on Earth due to interfering dust clouds and so forth.
2007-07-06 07:33:48
·
answer #1
·
answered by JLynes 5
·
2⤊
0⤋
The Earth is probably the remains of only one star. The heavier elements such as iron are created by the process of nuclear fusion within stars. When the star ages, and the fuel is used up, the star, depending on the size, can just collapse into a dwarf, explode in a nova, or if it was a large star into a super nova. The star's material is blasted into space. The Earth is said to be about 3 or 4 billion years old. When it was forming, the nebula from which it collected material probably came from only one star, since the distance between stars is so great. It is possible that more than one star contributed the iron and other heavy metals which are found on Earth, but not likely. If the sun was larger, and there were more rocky planets and gas giants in this solar system then I would lean toward the belief that more than one star contributed material to the gaseous proto solar system. But our sun is not that large. There is not enough material nearby to suggest that we are in a large post nebulae area of space that had many stars. We are pretty far out on one limb of the milky way. If we were closer to the galactic core, then probably we would have collected materials from more than one star.
2016-04-01 00:40:44
·
answer #2
·
answered by ? 4
·
0⤊
0⤋
Proof: Ian Ridpath, author of 'ASTRONOMY', DK Publishing, NY NY.
Number of stars:
As seen with the naked eye on a clear, dark night, almost all of the stars you see are part of the Milky Way Galaxy. Within the Milky Way Galaxy there are over 200 Billion Stars. An exact number is impossible to furnish to you, because, for example, the center of the Milky Way Galaxy is a densely packed cluster of stars which is extremely bright. It is so bright that the individual stars which comprise the center are not able to be identified.
The Milky Way Galaxy is a disk shaped configuration 1500 Light Years wide and 1.5 Light Years thick. Proceeding outwards from the dense cluster of stars at the center are a number of spiral arms made up of many stars. Our Solar System is about 1/3 of the way out on one of those spiral arms.
Now, beyond our Galaxy there are thousands and thousands more galaxies. Each one of those galaxies has billions of stars within it. So the total number of stars in the Universe is really vast, and impossible for anyone to write down as a specific number.
2007-07-06 08:01:27
·
answer #3
·
answered by zahbudar 6
·
0⤊
0⤋
There are 40 stars 2nd magnitude or brighter in our sky. There are about 6,000 naked eye stars. That number can only be seen under very dark sky.
The Hubble guide star catalog has 18 million stars. These are only the closest stars in our galaxy. And that is about all that have their location accurately mapped.
If you want estimates in the galaxy, that is about 100 billion stars in our fairly large galaxy. Our galaxy is the second largest in our local group.
There are about 500 billion galaxies in range of the Hubble telescope. Each of those is a large galaxy like ours with 100 billion stars of their own each. Some have more; some have less.The little ones can only be seen in about 6 close groups to ours. Little galaxies have about 20% of the stars in our local group. It is unknown if the little galaxies exist out into farther space.
2007-07-06 07:56:26
·
answer #4
·
answered by Owl Eye 5
·
0⤊
0⤋
With the naked eye, about 1,200 stars are visible. All of those are in our galaxy (..the Milky Way..) which has between 200- to 300-billion total stars. The total number of stars in the *entire universe* is approximately 70-sextillion. That's 70 followed by 21 zeros. See this website for 'proof' ==>http://www.abc.net.au/science/news/space/SpaceRepublish_910295.htm
2007-07-06 07:39:45
·
answer #5
·
answered by Chug-a-Lug 7
·
2⤊
0⤋
Two things-
1. Not possible to count them as there are many that are not visible to even the most powerful telescope.
2. Have you considered some lessons in proper use of English grammar. "Rate of stars in the sky" makes no sense.
jj
2007-07-06 07:38:17
·
answer #6
·
answered by The man 7
·
1⤊
0⤋
WELL, with billions of stars in each galaxy, and estimated guess of 250 billion galaxies. The estimate is 10^61. If you don't understand that I'll write it out for you:
10 with 61 zeros after it.
2007-07-06 07:34:21
·
answer #7
·
answered by Anonymous
·
1⤊
0⤋
You can see about 3000 stars with your naked eyes.
but there is about 200000000000(2 hundred billion)stars in the Milky Way galaxy.
2007-07-06 07:41:25
·
answer #8
·
answered by behzadhooshmand 2
·
0⤊
0⤋
Screw your proof. Read. Look it up. I'm not going to sit here and defend myself to the likes of your deficient mentality.
So good luck to you.
2007-07-06 10:06:32
·
answer #9
·
answered by Anonymous
·
0⤊
0⤋
this is an unanswerable question. There are an infinite number of stars "in the sky".
2007-07-06 07:35:42
·
answer #10
·
answered by Jeff the drummer 4
·
0⤊
0⤋