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2007-04-24 19:55:04 · 6 answers · asked by Jilm_Jones 3 in Science & Mathematics ➔ Astronomy & Space
Because the stars in the center of a Galaxy are closer together.
Doug
2007-04-24 20:02:25 · answer #1 · answered by doug_donaghue 7 · 0⤊ 0⤋
The simple answer to this question is the middles of galaxies are always so bright because the concentration of stars in the middles of galaxies is always much greater than the concentration of stars on the outskirts of the galaxies.
The principle is the same regardless of the scale. For instance, 100 candles burning close to each other is going to appear brighter than 100 candles spaced further apart.
2007-04-25 03:18:41 · answer #2 · answered by OldSage 3 · 1⤊ 0⤋
There are two reasons; the first is that the center of a galaxy is the location of the highest concentration of stars due to constant star formation. The second fact is that in looking into the center, one is aggregating the light from stars in the visible path.
2007-04-25 15:11:35 · answer #3 · answered by Kris 5 · 1⤊ 0⤋
Galaxies have the greatest concentration of stars at their center. Most galaxies are theorized to contain a supermassive black hole at their center, which with its enormous gravity causes the stars to move inward towards the center (over billions of years). The brightness at galactic cores is simply due to the sheer number of stars, star clusters and glowing gas clouds in the center in comparison to the disk (elliptical) or arms (spiral).
2007-04-25 03:03:27 · answer #4 · answered by Anonymous · 1⤊ 0⤋
the answer is simple.
More Stars And bigger Stars.
2007-04-25 06:34:34 · answer #5 · answered by Eddyking4 2 · 1⤊ 0⤋
it has the most number of stars there. and there may be a supermassive black hole there too.
2007-04-25 04:01:57 · answer #6 · answered by Jeevan 2 · 1⤊ 0⤋