Hello people! Well, any way on this blog it's going to be about galaxies! Ok now lets get to the information.So what is a galaxy you ask well lets find out...
A galaxy is a group of dust, stars, and gas held together by gravity. Guess what,there are over 100 billion galaxies in our universe! A Supercluster is a large group of galaxies.
In our galaxy the milky way there are about 200-400 billion stars !That is alot. Now, there are 4 types of galaxies: Spiral, barred spiral,elliptical,and irregular. A spiral galaxy has a small bright center , or a nucleus. It sourt of looks like a pinwheel.
The next type of galaxy is a barred spiral. Like our milky way a barred spiral has arms that extend sideways in a short straight line before spiraling outward. Our milky way is barred spiral and it has two mane arms. Like I said before it has 200-400 billion stars in our galaxy.
Another type of galaxy is a Elliptical galaxy. A Elliptical galaxy does not have a real arrangement of stars.They sourt of look like a flattened sphere. They are made up of older stars and and little gas.
The last type of galaxy is a Irregular galaxy. A Irregular galaxy are usually small and do not have a sperical shape. They do not look like other galaxies, they don't even look like eachother!
Now in most galaxies in there center is super massive black hole in the center of the galaxy. The black hole in our galaxy is waaaaaaaay bigger than our sun. A black hole spins and sucks everything into it when something gets in its way.
Remember from a few blogs ago about the big bang theory. Well, the big bang explosion was so powerful the galaxies in space are still moving away from each other. The explosion must have been really powerful!
Doppler shift is light from moving objects have different wavelengths. Redshift is that a object's light has a longer wavelength while blueshift is when a closer object's light has a shorter wacelength.
Well I guess that's it for this blog thank you for reading my blog! Peace out!
great job! best work i've seen from u! only bad thing is grammar. ur overall grade is 85%
ReplyDeleteyou did great links good grammer mistakes fine i give you 20/20
ReplyDeletegood job couple of grammar mistakes 18/20
ReplyDeleteGreat job, It was really easy to understand and you split it up well. You included a lot of multi media. Few grammar mistakes, overall a 95% (A)
ReplyDeleteGood job, a few mistakes over there, just make sure to check your blog or have someone read it out loud. Also check to make sue all of your pictures work, that has happened to me a lot! Overall Grade: 90%
ReplyDeletei agree with gabby 92.6%
ReplyDeletehi molly you blog was long but ill give you a 18/20. Great job with the rest of it.
ReplyDelete