Sirius is the brightest star in the night sky of earth not a galaxy
the closest galaxy to us is Andromeda.
andromada
For nearby stars, the parallax method is used.
Our solar system is centred round the Sun, which is our own star, while Sirius is a nearby star that is bigger and brighter than the Sun but a lot further away. Sirius can be found near the constellation of Orion, to the lower left of it when viewed from USA or Europe. It is the brightest of all the stars, but the planets Venus and Jupiter can be brighter at times.
No, a globular cluster is a group of stars that are part of a galaxy. The Virgo cluster is much bigger. It is a large nearby group of galaxies.
Sirius is one...
the closest galaxy to us is Andromeda.
Sirius, polaris, cygnus, betelgeuse, & rigel
No, it's just a pattern of stars that someone once thought looked like a scorpion. If you were to move away from earth, all the constallations would look quite different.
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, Rigel, Pollux and Castor
ambedextice .....DEREK
Rigel, Sirius, Betelgeuse, Vega and Polaris
That is unrelated to age. An irregular galaxy is one that has been distored by the gravity of nearby galaxies.
andromada
Just now (December), look for Sirius which is a nearby star and it has a type-A spectrum.
No, because they are not. Sirius A and B are just two stars in a Galaxy of many billions of stars. Sirius is a few hundred million years old, younger than most of the stars in the Milky Way.