Does a galaxy move?

Perhaps a stupid question but i'm new to astronomy and i would like to know
if a galaxy moves or not and if it moves, how does it move? I mean, the
planets are moving around a sun so does a galaxy move around something or
does it just move because of the big bang or what?

On Wed, 14 Jan 2004 12:24:04 +0000, Passero wrote:

Perhaps a stupid question but i'm new to astronomy and i would like to know
if a galaxy moves or not and if it moves, how does it move? I mean, the
planets are moving around a sun so does a galaxy move around something or
does it just move because of the big bang or what?

Yes, galaxies do move, just as in our solar system where the planets orbit
around our sun, galaxies are in their own orbit. But instead of orbiting
around a star they orbit around the center of the mass of their galactic
group. This is all based on Keplers three laws:

1. The orbit of each planet around the sun is an elipse, with the sun at
one focus.

2. Each planet moves along it orbit so that the radius vector sweeps out
equal areas in equal time.

3. The square of the orbital period of each planet in years equal the cube
of the mean distance from the sun in astronomical units.

Be aware, that due to the distances involved each orbit will be very long,
probably multiples of billions of years.

Now the galactic groups are also moving away from each other due to the
big bang.

Terry

On Wed, 14 Jan 2004 12:24:04 +0000, Passero wrote:

Perhaps a stupid question but i'm new to astronomy and i would like to know
if a galaxy moves or not and if it moves, how does it move? I mean, the
planets are moving around a sun so does a galaxy move around something or
does it just move because of the big bang or what?

Yes, galaxies do move, just as in our solar system where the planets orbit
around our sun, galaxies are in their own orbit. But instead of orbiting
around a star they orbit around the center of the mass of their galactic
group. This is all based on Keplers three laws:

1. The orbit of each planet around the sun is an elipse, with the sun at
one focus.

2. Each planet moves along it orbit so that the radius vector sweeps out
equal areas in equal time.

3. The square of the orbital period of each planet in years equal the cube
of the mean distance from the sun in astronomical units.

Be aware, that due to the distances involved each orbit will be very long,
probably multiples of billions of years.

Now the galactic groups are also moving away from each other due to the
big bang.

Terry

On Wed, 14 Jan 2004 12:24:04 +0000, Passero wrote:

Perhaps a stupid question but i'm new to astronomy and i would like to know
if a galaxy moves or not and if it moves, how does it move? I mean, the
planets are moving around a sun so does a galaxy move around something or
does it just move because of the big bang or what?

Yes, galaxies do move, just as in our solar system where the planets orbit
around our sun, galaxies are in their own orbit. But instead of orbiting
around a star they orbit around the center of the mass of their galactic
group. This is all based on Keplers three laws:

1. The orbit of each planet around the sun is an elipse, with the sun at
one focus.

2. Each planet moves along it orbit so that the radius vector sweeps out
equal areas in equal time.

3. The square of the orbital period of each planet in years equal the cube
of the mean distance from the sun in astronomical units.

Be aware, that due to the distances involved each orbit will be very long,
probably multiples of billions of years.

Now the galactic groups are also moving away from each other due to the
big bang.

Terry

On Wed, 14 Jan 2004 12:24:04 +0000, Passero wrote:

Perhaps a stupid question but i'm new to astronomy and i would like to know
if a galaxy moves or not and if it moves, how does it move? I mean, the
planets are moving around a sun so does a galaxy move around something or
does it just move because of the big bang or what?

Yes, galaxies do move, just as in our solar system where the planets orbit
around our sun, galaxies are in their own orbit. But instead of orbiting
around a star they orbit around the center of the mass of their galactic
group. This is all based on Keplers three laws:

1. The orbit of each planet around the sun is an elipse, with the sun at
one focus.

2. Each planet moves along it orbit so that the radius vector sweeps out
equal areas in equal time.

3. The square of the orbital period of each planet in years equal the cube
of the mean distance from the sun in astronomical units.

Be aware, that due to the distances involved each orbit will be very long,
probably multiples of billions of years.

Now the galactic groups are also moving away from each other due to the
big bang.

Terry

The sun is in orbit around the galactic center it rotates and us along with
it, Edwin Hubble found that all the galaxies are moving away from us.

So everything is moving somewhere.


"Passero" wrote in message
...
Perhaps a stupid question but i'm new to astronomy and i would like to
know
if a galaxy moves or not and if it moves, how does it move? I mean, the
planets are moving around a sun so does a galaxy move around something or
does it just move because of the big bang or what?

The sun is in orbit around the galactic center it rotates and us along with
it, Edwin Hubble found that all the galaxies are moving away from us.

So everything is moving somewhere.


"Passero" wrote in message
...
Perhaps a stupid question but i'm new to astronomy and i would like to
know
if a galaxy moves or not and if it moves, how does it move? I mean, the
planets are moving around a sun so does a galaxy move around something or
does it just move because of the big bang or what?

The sun is in orbit around the galactic center it rotates and us along with
it, Edwin Hubble found that all the galaxies are moving away from us.

So everything is moving somewhere.


"Passero" wrote in message
...
Perhaps a stupid question but i'm new to astronomy and i would like to
know
if a galaxy moves or not and if it moves, how does it move? I mean, the
planets are moving around a sun so does a galaxy move around something or
does it just move because of the big bang or what?

The sun is in orbit around the galactic center it rotates and us along with
it, Edwin Hubble found that all the galaxies are moving away from us.

So everything is moving somewhere.


"Passero" wrote in message
...
Perhaps a stupid question but i'm new to astronomy and i would like to
know
if a galaxy moves or not and if it moves, how does it move? I mean, the
planets are moving around a sun so does a galaxy move around something or
does it just move because of the big bang or what?

"Terry A. Haimann" schreef in bericht
news

Be aware, that due to the distances involved each orbit will be very long,
probably multiples of billions of years.


So our solarsytem does not "stay" at the same place in the univers?
Because of the orbit will be very long, does a galaxy stays at the same spot
at a specific time and place? for example when you look at a galaxy today at
22.30 and you look at the same place but in a few months, will you see the
galaxy or not? Or am i thinking wrong?

Now the galactic groups are also moving away from each other due to the
big bang.

Terry