Galaxies
The solar system is enormous compared to Earth, but star clusters are even bigger, and galaxies are even larger.
A galaxy is a massive group of stars, star systems, dust, and gas, all held together by gravity.
Galaxies are of three main types- spiral, elliptical, and irregular.
Like our Milky Way, spiral galaxies have a central bulge and arms that spiral outward like a pinwheel. They are rich in gas, dust, and young stars.
The Andromeda Galaxy is the closest galaxy to us, and it is 2.5 million light-years away. It’s also a spiral galaxy with a trillion stars.
Elliptical galaxies, true to their name, are elliptical or egg-shaped. They appear reddish or yellowish because they are mostly made up of old stars.
Next, there are irregular galaxies that don’t have a defined shape. Many were once spiral or elliptical galaxies, but gravity or collisions distorted them.
Dwarf galaxies are smaller versions of regular galaxies. Even though they’re small, they can still have billions of stars!
Can you imagine the vastness of the universe containing billions of such galaxies?
Galaxies
A galaxy is a massive system of stars, gas, dust, and dark matter held together by gravity. The universe has billions of galaxies, each contai…
The solar system is enormous compared to Earth, but star clusters are even bigger, and galaxies are even larger.
A galaxy is a massive group of stars, star systems, dust, and gas, all held together by gravity.
Galaxies are of three main types- spiral, elliptical, and irregular.
Like our Milky Way, spiral galaxies have a central bulge and arms that spiral outward like a pinwheel. They are rich in gas, dust, and young stars.
The Andromeda Galaxy is the closest galaxy to us, and it is 2.5 million light-years away. It’s also a spiral galaxy with a trillion stars.
Elliptical galaxies, true to their name, are elliptical or egg-shaped. They appear reddish or yellowish because they are mostly made up of old stars.
Next, there are irregular galaxies that don’t have a defined shape. Many were once spiral or elliptical galaxies, but gravity or collisions distorted them.
Dwarf galaxies are smaller versions of regular galaxies. Even though they’re small, they can still have billions of stars!
Can you imagine the vastness of the universe containing billions of such galaxies?
The solar system is enormous compared to Earth, but star clusters are even bigger, and galaxies are even larger.
A galaxy is a massive group of stars, star systems, dust, and gas, all held together by gravity.
Galaxies are of three main types- spiral, elliptical, and irregular.
Like our Milky Way, spiral galaxies have a central bulge and arms that spiral outward like a pinwheel. They are rich in gas, dust, and young stars.
The Andromeda Galaxy is the closest galaxy to us, and it is 2.5 million light-years away. It’s also a spiral galaxy with a trillion stars.
Elliptical galaxies, true to their name, are elliptical or egg-shaped. They appear reddish or yellowish because they are mostly made up of old stars.
Next, there are irregular galaxies that don’t have a defined shape. Many were once spiral or elliptical galaxies, but gravity or collisions distorted them.
Dwarf galaxies are smaller versions of regular galaxies. Even though they’re small, they can still have billions of stars!
Can you imagine the vastness of the universe containing billions of such galaxies?
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