Q. What is a large celestial body that is composed of gas and that emits light?

Q. A collection of stars, dust, and gas bound together by gravity is...

Q. The distance that light travels in one year...

Q. What is a large spherical body that orbits a star?

Q. The sun and all of the planets and other bodies that travel around it make up our...

Q. A large cloud of gas and dust in interstellar space; the predecessor to stars...

Q. What is the graph that shows the relations between a star's surface temperature and absolute magnitude?

Q. Space and all the matter and energy in it is...

Q. Lightyear is used by scientist to measure what?

Q. Nebulae are considered "Stellar Nurseries" because...

Q. The Hertzprung Russell Diagram consists of two axis that are labelled...

Q. Which of these stars is hottest?

Q. What else does the H-R Diagram tell us besides the luminosity and temperature?

Q. Compared to the rest of the stars, our sun is considered...

Q. Which category is our Sun located in?

Q. The category that contains the most stars is...

Q. Scientist use Light years to measure objects in space rather than units such as Miles or Kilometers because of how massive the Galaxy and Universe is.