Galaxy in the Universe
In the Universe there are billions of galaxies present out there.We live in Milky Way galaxy or our nearest Galaxy is the Andromeda Galaxy (M31) is the closest spiralgalaxy to us, and though it's gravitationally bound to the Milky Way, it's not the closest galaxy by far – being 2 million light years away.
Heyy guyzz this is Ankit Sagar back with a new blog.so today our topic is galaxies in the Universe.
WHAT'S IN A NAME?
Galaxy comes from the Greek name for the galaxy we live in - Milky Way Galaxy - and has its origins in the Greek word for milk.
How many galaxies are there in the Universe?
We don't know. Every time astronomers look into the Universe they discover more galaxies. Some parts of the Universe have not been looked at yet, and there are other parts that telescope cannot see. The best estimate by astronomers is that there are at least 125 Billion galaxies out there.
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| They all are galaxies |
What's in our solar system
Apart from the planets, the solar system contains countless objects hurting through space.
- 1 sun
- 4 rocky planets
- 4 giant planets
- at least 5 dwarf planets
- more than 160 moons
- billions of asteroids
- thousands of kuiper Belt Objects and trillions of comets, way beyond neptune
Black Holes
- A black hole is a region of incredibly powerful gravity that drags matter towards it and squeezes it into a tiny space or point, which is called singularity.
- They are called "black" because the light that is sucked in canot get out.
- You get black holes when massive stars explode. These explosions are called supernovas.
- You also get black holes at the centre of active galaxies, where their mass is equivalent to millions of suns.
Galaxy gallery
The vast spinning collections of stars, gas, and dust that make up a galaxy can look truly spectacular. Some galaxiesare named after the earthly objects they resemble.
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| Andromeda Galaxy |
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| Black Eye Galaxy |
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| Cigar Galaxy |
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| Cartwheel Galaxy |
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| Koleski Galaxy |
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| Nebula Galaxy |
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| Sombrero Galaxy |
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| Crab Nebula Galaxy |
Colliding in space
Adjacent galaxies are typically ten galaxy diameters apart. But galaxies can collide - as this picture of galaxies NGC 6050 and IC 1179 shows.
Three views of the Milky Way
Apart from the Milky Way, three galaxies are easily seen with the naked eye from Earth-Andromeda, the Large Magellanic Cloud, and the small Magellanic Cloud.
Common Shapes
A disc-shaped galaxy with a central bulge and arms spiralling away from it.
It cannot be classed into any group due to no regular shape,shape.Yet it is rich in gas and dust.
A spiral galaxy with a straight bar of state that ru through the centre, like the Milky way.
A collection of old stars that can be shaped like a ball, egg, or cigar.
5. Lenticular Galaxy
This is a lens - shaped galaxy seems to bridge the gap between ellipticals and spirals.
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Have a nice day.
Have a nice day.
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