Elliptical Galaxy Facts For Kids
An elliptical galaxy is a type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless image.
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Introduction
Elliptical galaxies are fascinating space objects! 🌌These galaxies have an egg or oval shape, making them different from other types like spiral galaxies. They are mostly made of stars, gas, and dust. Scientists believe there are about 10,000 of these galaxies in our universe! Most of them are found far away, more than 1 million light-years from Earth. 🪐The biggest elliptical galaxy, called IC 1101, is located in the Abell 2029 cluster and is about 6 million light-years wide! Elliptical galaxies are older and have fewer young stars compared to their spiral cousins. 🌟
Images of Elliptical Galaxy
![Elliptical galaxy IC 2006[13]](https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Elliptical_galaxy_IC_2006.jpg/500px-Elliptical_galaxy_IC_2006.jpg)
Elliptical galaxy IC 2006[13]
![The galaxy located in the image is 4C 73.08, a giant elliptical galaxy.[15]](https://upload.wikimedia.org/wikipedia/commons/thumb/1/19/Galactic_fireflies.jpg/500px-Galactic_fireflies.jpg)
The galaxy located in the image is 4C 73.08, a giant elliptical galaxy.[15]
Hercules A, a supergiant elliptical galaxy and also a radio galaxy. The radio lobes shown here in pink are over a million light-years across.
![The brilliant central object is the supergiant elliptical galaxy SDSS J142347.87+240442.4, the dominant member of the galaxy cluster MACS J1423.8+2404. It has a diameter of 380,000 light-years.[20] Note the gravitational lensing.](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/MACSJ1423.8%2B2404.jpg/500px-MACSJ1423.8%2B2404.jpg)
The brilliant central object is the supergiant elliptical galaxy SDSS J142347.87+240442.4, the dominant member of the galaxy cluster MACS J1423.8+2404. It has a diameter of 380,000 light-years.[20] Note the gravitational lensing.
NGC 3597 is the product of a collision between two galaxies. It is evolving into a giant elliptical galaxy.
Elliptical galaxy IC 2006[13]
The galaxy located in the image is 4C 73.08, a giant elliptical galaxy.[15]
Hercules A, a supergiant elliptical galaxy and also a radio galaxy. The radio lobes shown here in pink are over a million light-years across.
The brilliant central object is the supergiant elliptical galaxy SDSS J142347.87+240442.4, the dominant member of the galaxy cluster MACS J1423.8+2404. It has a diameter of 380,000 light-years.[20] Note the gravitational lensing.
NGC 3597 is the product of a collision between two galaxies. It is evolving into a giant elliptical galaxy.
Types Of Elliptical Galaxies
There are different types of elliptical galaxies, which scientists categorize using letters. They range from E0 to E7! The number describes how "flat" or "round" the galaxy is. E0 galaxies are nearly as round as a circle, while E7 galaxies are very elongated, looking more like a pancake! 🥞Most elliptical galaxies fall into the E0–E5 category, with E5 being the most common. 🌌
Characteristics And Structure
Elliptical galaxies are known for their smooth and featureless appearance. Unlike spiral galaxies with spinning arms, they look like fuzzy balls! 🎱Their stars are mostly older and redder, which means there aren’t many young, blue stars! 🌟The stars in elliptical galaxies are arranged randomly, not in neat patterns. They also have little gas and dust, so new stars don’t form easily. The centers of these galaxies often have a supermassive black hole! 🌑This black hole can be millions of times heavier than our Sun and helps hold the galaxy together.
Formation Of Elliptical Galaxies
Elliptical galaxies form in a few exciting ways! One popular idea is that they are created from the merging of smaller galaxies. When galaxies bump into each other, they can combine and take on an elliptical shape. This can happen over billions of years! 🌠Another way they form is through the slow-moving gas and dust clumping together due to gravity. This process, called "collapse," helps create stars and leads to the formation of an elliptical galaxy. 🌌Understanding how they develop helps astronomers learn more about the universe's history!
Elliptical Galaxy Quiz
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