A Star's Temperature And Luminosity Analysis

In life humans want to try to find peace with one another, but there is always that one person who doesn’t want to cooperate and listen. There are human that are living a life immaturely and can’t accept equality because of their ignorance and pride, this is why there is no peace in this world. Usually there is a majority of people who never think twice about someone’s feelings or about empathy. In the short story “Out of All Them Bright Stars”, by Nancy Kress, she illustrates about a blue alien name John who enters into a restaurant to dine-in, and is presenting himself appropriately and politely to Sally, but then comes barging out of the kitchen name Charlie, who dislikes him and acts disrespectful to him because of the way he looks. He

Isabel Wilkerson is an African American Howard University journalism graduate writer and the first black woman in the history of American Journalism to win a Pulitzer Prize. Among her notable works is the novel “The Warmth of Other Suns”. The novel The Warmth of Other Suns was about the Great Migration which occurred between the years 1915-1970 and this was the movement of approximately seven million Black people out of the Southern United States to the North, Midwest and Western states from 1916 to 1970. Blacks migrated to escape widespread racism in the South, to seek employment opportunities in industrial cities of the North, to get better education for their children, and to pursue what was widely

Scaled radius of the Sun: 6.96 x 105 Km * (1 cm/6.96 x 104 Km) = 10 cm

2) Why are there different brightness of stars and how do we describe their brightness as compared to one another?

They can extend to 1000 solar radius. Giant stars are smaller in size and colder than supergiant stars. (DTU 10ED Page: 354)

A stars luminosity is measured by the apparent magnitude and absolute magnitude of the star and the amount of the light that is being emitting from it’s surface.

14. Why do stars have different levels of brightness, and how does one describe their brightness as compared to one another?

5. On what kind of diagram are stars plotted according to their surface temperature and luminosity?

[27] Scientists can determine what a distant star is made of by looking at ____.

Another property of a star is temperature. By measuring the temperature of a star, scientists are able to tell how hot the star is. They use color to measure the temperature of stars. The red ones are the coolest (3,500 K), the yellow ones are warmer (5,000 to 7,000 K), the white ones are warmer still (9,000 to 15,000 K), and the blue ones are the hottest (20,000 to 50,000 K).

3. Why are less massive stars thought to age more slowly than more massive stars, despite the fact they have much less “fuel”?

Telescopes have not yet revealed the planet's disk. To estimate how big it is, the astronomers must rely

They are very luminous stars that have a relatively cool surface temperature compared to the stars in the main sequence that have about the same luminosity. Red giants typically have low to intermediate mass than a regular star, even though they are about 1000 times larger in the red giant phase of stellar evolution. Red supergiants are known as the biggest stars by radius. The biggest red supergiant is mentioned as VY Canis Majoris. This star is about 1800 times bigger than our sun. Although there are plenty of red giants in space, none of them are that close to us. The closest red giant is Gamma Crucis (88 light years away).3

Devin Lally Dr. Aaron Titus FYS 1100 Final Essay: Drake Equation The Drake Equation is a theorized equation used to estimate the number of intelligent, radio-communicative life in the Milky Way galaxy. The Drake Equation was written in 1961 by Frank Drake soon before he was going to attend and present at the “search for extraterrestrial intelligence” meeting or SETI. Drake pointed an 85 foot telescope1 at nearby stars and hoped for a response (Scoles).

Main sequence stars like our own sun enduring in a state of nuclear fusion during which they will produce energy for billions of years by replacing hydrogen to helium. Stars change over billions of years. When their main sequence phase ends they pass through other states of existence according to their size and other characteristics. The larger a star's mass, the shorter its lifespan is. As stars move toward the end of their lives, much of their hydrogen will be converted to helium. Helium sinks to the star's core and raises the star's temperature—causing its outer shell to expand. These large, puffy stars are known as Red Giants. The red giant phase is actually a prelude to a star shedding its outer layers and becoming a small, dense body called a White Dwarf. White dwarfs cool down for billions and billions of years, until they finally go dark and produce no energy at all. Once this happens, scientists have yet to observe, such stars become known as Black Dwarfs. A few stars avoid this evolutionary path and instead go out with a bang, exploding as Supernovae. These violent explosions leave behind a small core that will then turn into something called a Neutron Star or even, if the remainder is large enough, it is then turned into something called a Black Hole.