List The Four Most Common Star Colors Are The Dimmest Star?

The order in which the greatest blue shift to the red shift of the five distant stars is E, D, B, C, A. The arrows in the diagram represent the speed of movement of the star, the longer the arrow the faster the movement of the star and vice versa. Furthermore, the motion of the source of light is said to be blueshifted if it is moving towards the observer, but if the source is moving away from the observer it is called redshifted (Prather p75). As a result, the star that is moving faster toward the observer will have the greatest blueshift while the star that is moving away from an observer will have the greatest redshift.

4. ___C__ The shade of achromatic color stays the same regardless of how much sunlight is reflected.

The area on the H-R diagram where “normal” stars can be found is known as the _________.

A dim star viewed at night may disappear when you look directly at it, but reappear when you look to one side of it.

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

1. Explain what the sun is and how it differs from other stars we see in the sky.

b. Describe the spectral curve of each target type with respect to its absorption and reflectance characteristics. (3)

Does the star Betelgeuse, whose apparent magnitude is m = +0.5, look brighter or dimmer to us than the star Pollux, whose apparent magnitude is m = +1.1?

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

- Discuss stellar evolution (describing each stage in brief). What forces are opposing one another throughout the life of a star and how do they influence the various stages in the life cycle of a star

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).

13) When we say a star “moves” on a H-R diagram we are not saying that it is physically moving from one place to another, we are saying that it is transitioning from one stage of its evolutionary life to another. For example we might say it is moving from pre-main sequence to main sequence. This means that the star has moves from an early stage in its life to the middle stage of its life. It has physically stayed in the same place in space.

     Stars are a marvelous wonder to many people, that is why some people spend most of their lives wondering what is “above the world so high” (Gardner 98). These people study and map the little twinkling stars in order to get a better meaning of them; they are astronomers. Great astronomers like Edwin Hubble, Immanuel Kant, and William Huggins, never stopped valuing the beauty of the stars. While they developed great astronomical principals. One astronomer who fits this mold most is, Edwin Powell Hubble. Wondering about what was