Well this is a difficult question but it happened because a huge amount of hydrogen got collected in the area where the milky way is. This hydrogen and other particles collided and formed stars, planets, commets etc.
The "baby boom galaxy" was named the "baby boom galaxy" because of the surprising amount of new stars being "born", created within it. At over 4,000 new stars per year it is the "mother" of all stellar births. In comparison, our Galaxy, the Milky Way, only one to two new stars are formed each year.
Well this is a difficult question but it happened because a huge amount of hydrogen got collected in the area where the milky way is. This hydrogen and other particles collided and formed stars, planets, commets etc.
The Big Bang theory states that the galaxies in the universe were formed almost 14 billion years ago. The Big Bang theory proves the galaxy spread out as it formed.
The answer is that is that the local group,is formed by galaxies and the Milky Way is the one that's the biggest one of there with other Galaxy
The Andromeda Galaxy is a spiral barred galaxy, similar to our own galaxy, the Milky Way.
The galaxy was formed from the attraction of stars which in our galaxy orbit a massive black hole.
A star - especially as a galaxy is formed of billions of stars.
In the same way as any other galaxy. It happened when a huge amount of gases collected and cooled in that area. These collided and formed stars that make up the galaxy.
in the middle
A globular cluster.
An antigalaxy is a conjectured type of galaxy formed from antimatter.
They can be outside a galaxy. For a start, stars formed within a galaxy can be catapulted out of a galaxy (when they come close to another star, and change their velocity as a result).
Big Crunch?
Much like it does now.
It might; gravity might also catapult stars out of a galaxy. But mainly, the stars in a galaxy are believed to have formed within the galaxy in the first place.
It measures hydrogen from which stars are formed.
We will never know - until we have the technology to age the stars within the galaxy. Most galaxies formed very early on, soon after the big bang, so there is no reason why NGC 1232 is any different.