2007-10-10 17:00:38 · 6 answers · asked by kris 1 in Science & Mathematics ➔ Astronomy & Space
Andromeda galaxy is 700,000 parsecs away.
The Milky Way is about 28,000 parsecs in diameter in its brighter parts, although there is associated gas that extends halfway to Andromeda.
2007-10-11 02:18:47 · answer #1 · answered by cosmo 7 · 0⤊ 0⤋
Off the top of my head, if I remember right, the size of Andromeda Galaxy as visible in the night sky is about twice the size of the moon. But Milky Way galaxy is about half the size of Andromeda Galaxy. Since the moon is 120 times as far from Earth as it is wide, that should give you the answer---roughly 120 times the size of Milky Way Galaxy. Now, let me go check this out.
Okay, Andromeda galaxy is about 2,500,000 light years away, while the Milky Way galaxy is about 100,000 light years across. So, that's a ratio of about 25, and I was off by a factor of about 5. I guess Andromeda galaxy would look really huge if all of it was visible to the naked eye.
Gee Whiz, Gee has got it right.
2007-10-11 00:08:07 · answer #2 · answered by Scythian1950 7 · 1⤊ 0⤋
If I remember correctly, the andromeda galaxy is 2.5 million light years away. The milky way galaxy is approx 100k light years across.
Hope this helps.
2007-10-11 00:13:05 · answer #3 · answered by Gee Whizdom™ 5 · 0⤊ 0⤋
about 4.2 million light years and milky way is about 100000 light years in diameter. so about 420 times
2007-10-11 05:41:19 · answer #4 · answered by AMIR 1 · 0⤊ 0⤋
Around 10 of them, give or take.
2007-10-11 00:07:44 · answer #5 · answered by ZikZak 6 · 0⤊ 0⤋
dont even bother if your ship wont perform light speeds
2007-10-11 00:09:59 · answer #6 · answered by nickson faction 7 · 1⤊ 0⤋