2007-05-30 14:24:21 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
great question..it really depends on the galaxy, i know this isnt the answer your looking for but galaxies are so varied that it would be very difficult to give a single temperature. the easiest way to determine a galaxies temperature is to measure its total luminosity. hope this helped at least a little!!!
2007-05-30 14:28:59 · answer #1 · answered by Bones 3 · 0⤊ 1⤋
A galaxy as such really doesn't have a temperature intrinsic to the galaxy, because 99.999999 percent of the space occupied by the galaxy is empty space, at zero degrees Kelvin.
True, at a distance a galaxy looks like a brilliant, hot cluster of stars, but they are really just relatively clustered. Remember that we are inside a galaxy, and even the nearest stars other than the sun are so far away they are just tiny points of light.
On the other hand, in 1964 I had a brand new Ford Galaxie convertible with a 390 cubic inch V-8 engine. Now, that was HOT!
2007-05-30 22:04:54 · answer #2 · answered by aviophage 7 · 1⤊ 0⤋
Its kind of like asking "how fast does a highway travel?", it depends on number of cars and how fast each car is travelling (lets forget about speed limits and all that).
Galaxies are collections of individual stars (some dwarf galaxies have only maybe 50,000 and then the big ones (like ours or Andromeda) have billions of stars.
Astronomers use the magnitude of the entire galaxy as a measure of its size and brightness (the more stars the brighter the galaxy, and the brighter the stars the brighter the galaxy).
So asking how hot galaxies are doesn't really have an exact answer (sorry bout that).
2007-05-30 21:52:04 · answer #3 · answered by Anonymous · 2⤊ 0⤋
Galaxies themselves are not "hot."
The stars within them are hot. There is a lot of empty space in between the various stars. Also, depending upon the type of star you are speaking about, the temperatures vary over a fairly wide range. You could go to Space dot com and look up information on stars and star types if you wish, or try doing a search on the internet using the key words:
Curious About Astronomy
And those words will take you to a site developed by Cornell University for people who are really into Astronomy. Check it out. It is worth the extra effort...Some really cool pics there.
2007-05-30 22:03:53 · answer #4 · answered by zahbudar 6 · 1⤊ 0⤋
I dont know but if your wondering about where in our galaxy life might exist it would probably be around the same distance from the center as our own sun. the center of our galaxy is hot because of a greater density of stars this makes life less likely. just like in our and others suns there is a sweet spot not to close not to far away.
2007-05-31 01:37:44 · answer #5 · answered by chingow 2 · 0⤊ 1⤋
Galaxies aren't solid objects; they are made up of individual stars. Stars can vary quite a bit in temp - when we speak of the temp, we refer to the surface and not the core of the star. Our sun is pretty typical at about 4500 K surface temp. Blue stars are much more massive and hot, and can get as hot as 20,000 K on the surface. Probably even hotter than that.
2007-05-30 21:29:05 · answer #6 · answered by eri 7 · 1⤊ 0⤋
i dont know for sure but just think about this...trillions of stars+ jumbo ones like the sun+solar systems= just ONE solar system wow
2007-05-30 22:35:38 · answer #7 · answered by al_that_2_u 1 · 0⤊ 0⤋