The different types of stars By: Anna Peterson in partnership with Dr. Jeffrey Hall

 Dr. Hall is an Astronomer that studies the different types of stars and how they differ from the sun. Dr. Hall serves as the director of Lowell Observatory in Flagstaff, Arizona since He has his PhD in Astronomy and Astrophysics, and his Bachelors Degree in physics. Dr. Hall studied Astronomy for about 9 years just in college. Dr. Hall’s profession

 Stars have many different names that tend to have some correlation. Most popular names include; Betelgeuse, Polaris, and Deneb. Many star names come from the Arabic origin. Many of the brightest stars are given Greek letter designations. It is basically another name but its Greek. Some other stars have number designations. Their the same thing as the letters but with numbers. Star names

 The way we look at constellations is when we see a pretty picture in the sky from the stars. Constellations are a group of stars that form a picture in the sky. There are 88 constellations in our solar system that take up the sky. Constellations

 Stars come from large, cold clouds of dust and gas. As you see above these clouds are very large. This cloud is called the Horsehead Nebula. When clouds begin to fold because of the gravity they create stars. When a gas cloud begins to collapse it starts to generate its own energy and light up. Another way they form is massive stars explode. When they explode they send shockwaves around the galaxy and if it hits a cloud of dust and gas the cloud collapses and forms other stars. Stars formation

 Stars vary in 3 main ways; temperature, brightness, and size. Temperatures vary from 3,000 degrees Fahrenheit to 30,000 degrees Fahrenheit. Their size can run anywhere from half the size of our sun to almost the size of the solar system. Some stars can be 50,000 times brighter than our sun and if we put one of them in place of our sun we wouldn’t be able to survive. Stars have many more differences including size and age but that can depend on the temperature, brightness, and size. Star Differences

 No two stars are exactly the same. They may come from the same place but are very different. We can use spectra to classify stars. One of the easiest ones is Spectral Type. Spectral Type is basically when a star is given letters in a temperate sequence. For example the letter can tell the hotness of the star, like F is the hottest and M is the coolest. Stars are classified by their spectral type. Different types

 In conclusion, stars have many different names and name patterns. They can vary from heat to size and shape. All stars are different and all have different backgrounds. They have different names and maybe formed the same way but are all completely different. Dr. Hall has so generously provided me with all of this information that has helped me so much. Without him I wouldn’t have been able so learn so much. Conclusion

 Images Google Images  Information Dr. Hall/  Hyperlink Star NamesStar Names  Voice Recording VideoVideo Works Sited