Question: What Galaxy Do We Live In?

How do galaxies die?

The process repeats: Gravity condenses gas into galaxies and stars, stars blow up and kick the gas out, gravity cycles the gas back in and makes new stars.

Without gas, it can’t form new stars; the old stars live out their lives and die, and eventually the galaxy dies too..

How much earths are there?

“As many as six billion Earth-like planets in our galaxy, according to new estimates.” ScienceDaily. ScienceDaily, 16 June 2020.

What is the largest galaxy?

IC 1101The biggest known galaxy is IC 1101, which is 50 times the Milky Way’s size and about 2,000 times more massive. It is about 5.5 million light-years across. Nebulas, or vast clouds of gas, also have impressively large sizes.

How old is an irregular galaxy?

The very bright stars in the picture, those with spikes around them, are stars in the foreground belonging to the Milky Way. 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 our Earth?

4.543 billion yearsEarth/Age

How old is space?

approximately 13.8 billion yearsAccording to research, the universe is approximately 13.8 billion years old.

What is a ghost galaxy?

The Ant 2 “ghost” galaxy is a large, dim dwarf galaxy that scientists have discovered near the edge of the Milky Way. While low in mass, Ant 2 is about the same size as the Large Magellanic Cloud (LMC).

How many stars are in our galaxy?

Astronomers estimate there are about 100 thousand million stars in the Milky Way alone. Outside that, there are millions upon millions of other galaxies also!

How many galaxies are there?

Research released in 2016 revised the number of galaxies in the observable universe from a previous estimate of 200 billion (2×1011) to a suggested two trillion (2×1012) or more and, overall, as many as an estimated 1×1024 stars (more stars than all the grains of sand on planet Earth).

What are the 4 types of galaxies?

In 1936, Hubble debuted a way to classify galaxies, grouping them into four main types: spiral galaxies, lenticular galaxies, elliptical galaxies, and irregular galaxies. More than two-thirds of all observed galaxies are spiral galaxies.

What is the oldest thing in the universe?

The search for extremely distant galaxies continues today. Astronomers have confirmed the discovery of one the oldest and most distant objects ever known in the universe — a star-forming galaxy 12.8 billion light-years away that started forming within a billion years of the Big Bang that kickstarted everything.

Who created universe?

In his 1988 book, A Brief History of Time, Hawking had seemed to accept the role of God in the creation of the universe. But in the new text, co-written with American physicist Leonard Mlodinow, he said new theories showed a creator is “not necessary”.

Which universe do we live in?

We live on a planet called Earth that is part of our solar system. But where is our solar system? It’s a small part of the Milky Way Galaxy. A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems.

How do you identify a galaxy?

Astronomer Edwin Hubble devised a method for identifying kinds of galaxies. Astronomer Edwin Hubble, after whom the space telescope is named, classified galaxies according to shape. The Hubble scale chart takes a wishbone, or tuning fork shape. Armless, elliptical galaxies are on the left.

Who creates God?

Defenders of religion have countered that the question is improper: We ask, “If all things have a creator, then who created God?” Actually, only created things have a creator, so it’s improper to lump God with his creation. God has revealed himself to us in the Bible as having always existed.

What is the closest irregular galaxy?

Canis Major DwarfThe closest galaxy to the Milky Way happens to be an irregular galaxy called the Canis Major Dwarf. With just one billion stars, it appears to be a small galaxy in the process of being consumed by our own galaxy.

Where is Earth in the galaxy?

Orion ArmWe live in a seemingly nondescript neighborhood in the Milky Way galaxy, in a small spiral arm called the Orion Arm.

What type of galaxy do we live in?

Milky Way GalaxyThey come in a variety of shapes and sizes. The Milky Way is a large barred spiral galaxy. All the stars we see in the night sky are in our own Milky Way Galaxy. Our galaxy is called the Milky Way because it appears as a milky band of light in the sky when you see it in a really dark area.

How old is our galaxy?

13.51 billion yearsMilky Way/Age

What shape is an irregular galaxy?

An irregular galaxy is a galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy. Irregular galaxies do not fall into any of the regular classes of the Hubble sequence, and they are often chaotic in appearance, with neither a nuclear bulge nor any trace of spiral arm structure.

How big is an irregular galaxy?

about 20,000 light yearsIrregular galaxies as a class have no particular shape, and have no spherical or circular symmetries as the ellipticals and spirals do. There is a range of sizes, but irregulars tend to be small. They average about 20,000 light years in diameter.