When was another galaxy discovered?

When was another galaxy discovered?

1923 — Edwin Hubble resolves the Shapley–Curtis debate by finding Cepheids in the Andromeda Galaxy, definitively proving that there are other galaxies beyond the Milky Way.

What is believed to be the origin of starburst galaxies?

stars and other objects of known intrinsic brightness. It will collide with the Andromeda Galaxy, triggering new star birth in gas and dust clouds. What is believed to be the origin of starburst galaxies?(24) A recent collision with another galaxy has triggered a wave of star formation.

What usually happens when two spiral galaxies collide?

when two spiral galaxies collide they form a elliptical galaxy. a spiral galaxy alone is neat and orderly, when two orderly galaxies collide they form a messy tangled galaxy which is an elliptical galaxy. This can cause galaxies to become distorted or even rip apart.

What is the likely cause of irregular galaxies?

Formation of Irregular Galaxies It seems that they are typically formed through gravitational interactions and mergers of other galaxies. Most, if not all of them began life as some other galaxy type.

Is the Milky Way an irregular galaxy?

Most galaxies can be categorized by their shape. Our own Milky Way is a spiral galaxy, for example, and the largest galaxies in the Universe are elliptical galaxies. Irregular galaxies are often chaotic in shape, with no central bulge or spiral arms. …

What is the age of the stars in an irregular galaxy?

The main body of SagDig is rich in gas, and contains many regions of active star formation. Indeed, the average age of the stars in the galaxy is a relatively young 4 to 8 billion years.

How old is the galaxy spiral?

At eleven billion years old, it is more than two billion years older than any previous discovery. Researchers think the galaxy’s shape is caused by the gravitational influence of a companion dwarf galaxy.

How is a galaxy born?

One says that galaxies were born when vast clouds of gas and dust collapsed under their own gravitational pull, allowing stars to form. The other, which has gained strength in recent years, says the young universe contained many small “lumps” of matter, which clumped together to form galaxies.

Are most galaxies Old or new?

Most galaxies are between 10 billion and 13.6 billion years old.

Is everything in the universe matter?

The Universe is thought to consist of three types of substance: normal matter, ‘dark matter’ and ‘dark energy’. Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe.

Are elliptical galaxies dying?

Elliptical galaxies are dead galaxies walking. They’ve used up all their reserves of star forming gas, and all that’s left are the longer lasting stars. Eventually, over vast lengths of time, those stars will wink out one after the other, until the whole thing is the background temperature of the Universe.