2006-07-03 03:59:02 · 18 answers · asked by cool_astad 1 in Science & Mathematics ➔ Astronomy & Space
Billions. There are too many to count them all.
2006-07-03 04:02:10 · answer #1 · answered by poeticjustice 6 · 0⤊ 0⤋
Estimates are between 10^22 to 10^24 for the universe.
From the site in the source -
Like the number of grains of sand on the beach or angels that can dance on the head of a pin, the number of stars in the sky remains a great unknown. Discussing the number of stars in the Milky Way alone, astronomer William Keel, writing for the sci.astro Galaxies FAQ, claims that there are "about as many as the number of hamburgers sold by McDonald's."
Then he elaborates. The usual way to determine the number of stars in the universe is to consider how many stars there are in the Milky Way, and then to multiply that number by our best guesstimate at the number of galaxies in the universe. This FAQ suggests there are probably about 400 billion stars in the Milky Way, although "a 50% error either way is quite plausible." As for the number of galaxies in the universe, well that's a whole separate mathematical puzzle.
Other star enumerators we located on the Web offer numbers ranging from more than 200 billion stars in our galaxy to 3 thousand million billion stars (3 followed by 16 zeroes), in the universe. NASA alleges there are zillions of uncountable stars.
From a recent astronomy news article on CNN.com, we learned about the Sloan Digital Sky Survey, an ambitious astronomy project currently mapping the night sky, to determine the "positions and absolute brightnesses of more than 100 million celestial objects."
2006-07-03 12:29:56 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Depending on the light polution you have in the neighbourhood you can see up to about 5000 stars with the naked eye. Some however are constellations or double-stars (or a rare planet), but the number of dots you can see is about this.
2006-07-03 11:14:22 · answer #3 · answered by Greek Oracle 4 · 0⤊ 0⤋
About 5,000 visible to the naked eye under ideal conditions.
100-200 visible in a city because of atmospheric and light pollutions.
About 70 sextillion estimated visible by the best telescopes (7 followed by 22 zeros).
Thats about 10 times more than all of the grains of sand on all of the beaches on earth.
2006-07-03 11:31:24 · answer #4 · answered by Epidavros 4 · 0⤊ 0⤋
I think the number is always changing. Stars burn out and light up all the time. I think so atleast.
There is an infinite number of stars in all of space though, since the universe is constantly expanding.
That's what I think anyway.
2006-07-03 11:03:42 · answer #5 · answered by Matt 3 · 0⤊ 0⤋
there r 5 1/2 i think
2006-07-03 11:03:36 · answer #6 · answered by armorefelix 1 · 0⤊ 0⤋
Millions upon millions
2006-07-03 11:02:25 · answer #7 · answered by satanorsanta 3 · 0⤊ 0⤋
we can see aproxly 10^14 with necked eye
2006-07-03 11:58:22 · answer #8 · answered by Sayom 2 · 0⤊ 0⤋
there is no answer to this as people discover new stars all the time!!!!
2006-07-03 11:02:52 · answer #9 · answered by mags_brfc 3 · 0⤊ 0⤋
More then brain cells in your head
2006-07-03 11:52:41 · answer #10 · answered by Anonymous · 0⤊ 0⤋