2. Everything Under and Over The Stars By Charlie, Chris and Jay

3. Question 1, what are Stars? Stars are big balls of dust and bright gas that start their life in a thing called nebulae. They come in all shapes, sizes, and temperature. Stars get their color from the temperature they are the hot stars are blue and the coolest are red. The sun is yellow because it is 5,500 degrees Celsius. The star gets it energy by nuclear fusion in the star's core.

4. What are Pulsars? A pulsar is a fast spinning neutron star when a big star collapses it becomes a neutron star. When that happens the star begins to go faster due to the angular momentum.

5. What are Neutrons and Neutron Stars? Neutron stars spin very fast and are only 10-15 km in radius. Neutron stars are made when super giants break down and together comes a neutron star. A few neutron stars emit radio waves and are known as pulsars.

6. What are White Dwarfs? White Dwarfs are unstable stars that have a unique mass-radius relationship. This is that The higher the mass, the smaller the radius, thus no stable white dwarf can exist. White dwarfs evolve from other stars with three, four, sometimes higher solar masses. It then swells to a red giant, and expels its outer layer in an incredibly catastrophic event

7. What are Red Dwarfs? Red Dwarfs are the coolest and most common of stars, but they don’t radiate as much light as other stars, so we don’t see as much of them. They cover a broad range of sizes and have life spans of several billions of years

8. What are Blue Giants? Blue giant stars are usually 10 times bigger than our star and two to four times hotter. Being very large, they use their fuel quickly and only have a life span of one million years. Every blue giant turns into a black hole because the neutrons cannot repel such a tremendous mass when it collapses.

9. What are Supernovas? A supernova is when a star runs out of fuel, and subsequently explodes. At this point, the star is at the end of its life. This means there was no matter left to be fused to create energy. That makes the star collapse on its self. This condenses the core to unimaginable densities

10. If the sun went nova, what would happen to the solar system? There was a recent supernova called SN1993J in a star system, which is not mentioned. The powerful shockwave traveled at 44 million mph, but 5 years later it slowed down because of drag caused by particles. There has been a supernova in the Milky Way, around the 1700’s. A stellar explosion would be traumatic, we would be bombarded by high-energy radiation that would be harmful to the atmosphere and would harm life on Earth.

11. What is Star Density? Star density is how many stars there are in one cubic light year. As you will find out, there are no stars in 1 cubic light year, but often times there will be 4 or 5 in 1000 cly (cubic light years). I will measure in 1000 cly for the sake of my sanity. In 1000 cly, there would be 2 white dwarfs and around 18 other stars.