Describe the Sun in relationship to other stars in the universe .

Which unit would be most appropriate for measuring each of the following distances? Choose between kilometers, AU, and light years. (a) the distance from the Milky Way to the Canis Major Dwarf Galaxy, (b) the distance from the Sun to Charon, one of Pluto's moons, (c) the distance from Earth's surface to the International Space Station.

Which unit of length in the metric system would be most appropriate in size for measuring each of the following items?

d. the diameter of a baseball

Which unit of length in the metric system would be most appropriate in size for measuring each of the following items?

a. the dimensions of this page

An astronomer observes several stars and records their respective colours, as shown in Table below. Using this data, order the stars by temperature from warmest to coolest.

$$\begin{matrix} \text{Star} & \text{Colour}\\ \text{10 Lacertra} & \text{bluish}\\ \text{Antares} & \text{reddish}\\ \text{Aldebaran} & \text{orange-ish}\\ \text{Canopus} & \text{bluish white}\\ \end{matrix}$$

(a) Quasars are some of the most distant objects in the Universe. In which direction do the light waves from quasars most likely shift? (b) A scientist observing a quasar in 2009 is actually seeing the quasar as it existed in the early Universe. Explain why this is so.

Write a paragraph describing the relationships among our solar system, the Milky Way, the Local Group, and the Virgo Supercluster.

Describe two celestial bodies that may form in the final stages of the life cycle of a star that is more massive than the Sun.

If Polaris is 400 ly from Earth, what its distance from Earth in kilometers?

Your class is discussing the difference between scientific theories and personal beliefs. Write a brief paragraph explaining why the Big Bang concept is considered a theory rather than a belief or an opinion.

A misnomer is a misleading or inaccurate term applied to a person or object. Explain why the term "black hole" is a misnomer.

What was Greek astronomer Hipparchus's contribution to the understanding of the characteristics of celestial objects?

What is the difference between the Solar Nebula theory and the Big Bang theory?

Copy each of the following statements into your notebook. FiII in the blanks with a word or phrase that correctly completes the sentence. The brightness of a star depends on both its __________ and its distance from the observer.