you can see some with telescope. Andromeda
Since Betelgeuse is a nearby star (compared to the size of the galaxy, that is), you can assume that it takes about the same time as our Solar System to orbit the galaxy - approximately 240 million years.
All the individual stars you can see in the night sky with your eyes are members of the Milky Way galaxy, the same one our sun is in. And they're all relatively nearby members too.
The sun is not a solid body, being gasseous in nature, but it does spin on its axis. Different parts move at different rates. In addition to spinning on its axis, the sun is in motion with respect to the nearby stars and it, with the nearby stars, are in motion around the center of the Galaxy, which itself is in motion with respect to nearby galaxies.
At the galaxy.
the closest galaxy to us is Andromeda.
ambedextice .....DEREK
Two nearby galaxies are Andromeda galaxy and Triangulum galaxy. Andromeda galaxy is about 2.56 million light years away from us. Triangulum galaxy is about 3 million light years away from us.
Sirius is the brightest star in the night sky of earth not a galaxy
andromada
you can see some with telescope. Andromeda
That is unrelated to age. An irregular galaxy is one that has been distored by the gravity of nearby galaxies.
Cepheid variables
It is called R136a1. It is in a star cluster in a nearby galaxy.
A galaxy is a cluster of stars and gasses and a planet is something that goes around a star. Can you see why this might not make sense?
The Large Magellanic Cloud and the Small Magellanic Cloud are two nearby dwarf galaxies. Two larger galaxies that are still part of our local group are the Andromeda Galaxy (a.k.a. M31), and the Triangulum Galaxy. All of the above-named galaxies can be seen with the naked eye.
Since Betelgeuse is a nearby star (compared to the size of the galaxy, that is), you can assume that it takes about the same time as our Solar System to orbit the galaxy - approximately 240 million years.