Stars!
Hello everybody, did you like my last blog?  Well today we are going to talk about Stars! Do you know about what  a stellar nursery is. Well, if you don't know what a stellar nursery is it is a cloud filled with dust gas where stars are formed. In that cloud of gas and dust are baby protostars. Protostars are just dense clumps then if clump grows large in of by gravity it begins to give of heat. 

This heat and pressure build until nuclear fusion begins to take place. This is when two hydrogen atoms combine to make helium atoms pretty cool right. Anyways, after nuclear fusion happens it enters its main sequence. The main sequence is the longest part of a stars life.Our Sun is in its main sequence right now.   

Now lets talk about what happens to a star after its main sequence. The next stage of a star is a Red Giant. Lets use our sun as an example. When our sun becomes a red giant it becomes more red and bigger. But soon it comes bigger and bigger and bigger until it burns all the planets including the earth. But don't be scared we would be long gone when that happens. But soon the outer layer will go away and becomes a Planetary Nebula  

The last stage of a star is a star becoming a White Dwarf. But a white dwarf is also the core of a dead star that is small but dense.

But there is another way a star can die can you try to guess. Well  if you don't know the answer at all I will tell you. Another way a stars can die is by a super nova. A Super Nova is

a large star collapsing in on it self and EXPLODES.       

But some stars turn into black holes. If you didn't see my last blog it was about black holes.

      
Well  the last thing I have to tell you is about Pulsar stars. Pulsar stars sound like a star that would give of waves. Well that is eventually what it is a star that spins rapidly and emits radio waves. Well I got to go so bye.

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Hello everybody,
Today we are going to talk about black holes. Well, a black hole is a region of the universe that is really dense that it traps stuff in it for ever. First I will tell you about how a black hole is formed. Scientists think that there are at least two ways that black holes can form. One is through the death of a large star. Just think of a star like a big fireball and just like fire it needs fuel to burn. Normally as a star burns its fuel it creates a short push that counters the force of gravity pushing in the star's center. Soon,  the fuel runs out. when this happens in a large enough star the force of gravity makes the entire star explode and it becomes a black hole.

 The second way a black hole can form is the collection of matter at the center of our galaxy. one crazy thing about black holes is that nothing can escape it not even light. So you cant really see a black hole.Lets say that you are in space and you got to close to a black hole you would be sucked in and once you pass the event horizon you can never EVER return. Then you would be ripped into individual atoms. Black holes have three layers the outer and inner event horizon and the singularity.

Now lets talk about space time. the universe is measured in something called space time. in the everyday world  matter takes up dimension length, height and width . but there is another dimension that works were closely like the other three. That is how we can see and measure events . So if you take time and add it together and add it together you would get space time. Scientist often say space time is kind of like never ending fabric.  Recent evidence shows that black holes have major influence on the neighborhoods around them.

According to Albert Einsteins theory of relativity, the fabric is not just flat it bends around objects. this bending represents the force of gravity so the more bigger the objects is the more space time is bent. Lets say we have a small tennis ball representing the sun. If we placed that ball on a piece of fabric representing space time the fabric would bends a little because the sun has mass and a little gravitational pull.A black hole though would be like putting a bowling ball on the fabric. Because it is much more massive so its gravity is stronger. So that would mean the distortion in space time would be extreme. Scientists can't directly observe black holes with telescopes that detect x-rays, light, or other forms of electromagnetic radiation. We can, however, infer the presence of black holes and study them by detecting their effect on other matter nearby.

If a black hole got into our solar system planets would be colliding with each other.

  

well I got to go so bye.

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                                     The Milky Way Galaxy

                 Hello everybody, my blog today is about the Milky Way Galaxy.Well, the The Milky way Galaxy has somewhere between 200 billion and 400 billion stars, can you believe that? So the milky way galaxy is made up of planets, gas, dust and an unknown substance called Dark Matter . Do you know why the Milky Way Galaxy is called that name, it is because it looks haze and white from earth in the night sky. If a person could step outside our galaxy and look in, the milky way galaxy would look like a spiral with a band across the middle. Four major arms, and several minor ones, spiral around the bulge in an area know as the disk. Outside the disk is a spherical halo of old stars. Most astronomers think there's a massive black hole in the center of the galaxy. A black hole is the results of a collapsed star or large group of stars. The earth is located in a minor arm of the disk called Orion arm. Our solar system orbits around the galactic center once every 225-250 million year. That period of time is called the galactic year. Earth and 100 billion stars call the Milky Way home.      

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The Big Bang

Hello everybody,

My blog today is about The Big Bang. According to the Big Bang theory, the universe started 14 billion years ago.So back then, all the stuff in the universe was all just a thick dense point called a singularity. But in that small little ball contained all the elements that would create the universe. No one knows why it exploded, but it sent time, space, and matter flying everywhere.The universe was very hot at first about 10,000 million million million degrees wow. Well after things started to  cooled down a bit, the first stars and galaxies began to form. Even today the universe is still expanding.Well the Big Bang theory was first proposed by Belgian priest and an astronomer named Georges Lemaitre. He said that the universe started in a giant explosion.But there were other theories on how universe began; one was called the steady state theory. According to this theory, the universe just sort of appeared. American astronomer, Edwin Hubble, discovered major evidence supporting the Big bang theory. He said that, not only the universe moving, but all matter has taken the same amount of time to get to where it is today.

Well later in the 1960’s, several radio telescopes found proof of the Big Bang, one telescope was able to look so far in the universe that it found leftovers of the radiation given off by the Big Bang.Well this is it, it is time for me to leave so goodbye.      

                                

           

                      The Scientific Method

Hello everybody, and welcome to My Amazing Science blogs. This is my first blog and it might be not that good but I hope you enjoy it. So lets get started. This blog is about The Scientific Method. Well the Scientific Method is a series of steps that helps answer a question or problem based on observations of the world around us. These are some words you might need to know. hypothesis - is an educated guess based on observations and knowledge. data - information gathered during an experiment.  Here are the steps to the scientific method.




 Identify the Problem       

 Form a Hypothesis
                        
 Create an Experiment
                   
 Perform a Experiment

 Analyze the Data

 Communicate the Results