What Are The 4 Types Of Galaxies?

What are the 5 types of galaxies?

There are four main categories of galaxies: elliptical, spiral, barred spiral, and irregular.

These types of galaxies are further divided into subcategories while at the same time other types of galaxies exist based on their size and other unique features..

What is the oldest type of galaxy?

GN-z11GN-z11 is currently the oldest and most distant known galaxy in the observable universe….GN-z11Distance≈32 billion ly (9.8 billion pc) (present proper distance) ≈13.4 billion ly (4.1 billion pc) (light-travel distance)Apparent magnitude (V)25.8HCharacteristicsTypeIrregular12 more rows

What is the rarest type of galaxy?

elliptical galaxyAstronomers recently mapped the rarest type of galaxy ever found: an elliptical galaxy sporting rings of young stars. Most galaxies, including our own Milky Way, are spiral or elliptical. But this recently mapped galaxy, called PGC 1000714, is unique.

What are the most common galaxies?

What Are Elliptical Galaxies? Elliptical galaxies are the most abundant type of galaxies found in the universe but because of their age and dim qualities, they’re frequently outshone by younger, brighter collections of stars. Elliptical galaxies lack the swirling arms of their more well-known siblings, spiral galaxies.

What is the nickname of our galaxy?

The term “Milky Way”, a term which emerged in Classical Antiquity to describe the band of light in the night sky, has since gone on to become the name for our galaxy. Like many others in the known Universe, the Milky Way is a barred, spiral galaxy that is part of the Local Group – a collection of 54 galaxies.

How does galaxy look like?

A spiral galaxy has a flat, spinning disk with a central bulge surrounded by spiral arms. That spinning motion, at speeds of hundreds of kilometers a second, may cause matter in the disk to take on a distinctive spiral shape, like a cosmic pinwheel.

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 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 do we know we are in a spiral galaxy?

1) When you look toward the Galactic Center with your eye, you see a long, thin strip. This suggests a disk seen edge-on, rather than a ellipsoid or another shape. We can also detect the bulge at the center. Since we see spiral galaxies which are disks with central bulges, this is a bit of a tipoff.

What is the largest type of galaxy?

The largest galaxies in the universe are giant ellipticals. They can contain a trillion stars or more, and span as much as one million light-years — about 10 times the diameter of the Milky Way.

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.

What galaxy do we live in?

The Milky WayWe live in one of the arms of a large spiral galaxy called the Milky Way. The Sun and its planets (including Earth) lie in this quiet part of the galaxy, about half way out from the centre.

How many galaxies have we named?

All in all, Hubble reveals an estimated 100 billion galaxies in the universe or so, but this number is likely to increase to about 200 billion as telescope technology in space improves, Livio told Space.com.

What’s in the middle of a galaxy?

The Galactic Center (or Galactic Centre) is the rotational center of the Milky Way galaxy; it is a supermassive black hole of 4.100 ± 0.034 million solar masses, which powers the compact radio source Sagittarius A*.

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.

Where is the sun located in our galaxy?

Orion SpurThe Sun, and everything that orbits it, is located in the Milky Way galaxy. More specifically, our Sun is in a spiral arm called the Orion Spur that extends outward from the Sagittarius arm.

What are the type of galaxies?

Astronomers classify galaxies into three major categories: elliptical, spiral and irregular. These galaxies span a wide range of sizes, from dwarf galaxies containing as few as 100 million stars to giant galaxies with more than a trillion stars.

What is the closest galaxy to our galaxy?

Canis Major Dwarf GalaxyThe closest known galaxy to us is the Canis Major Dwarf Galaxy, at 236,000,000,000,000,000 km (25,000 light years) from the Sun. The Sagittarius Dwarf Elliptical Galaxy is the next closest , at 662,000,000,000,000,000 km (70,000 light years) from the Sun.