Chapter 23

The type of death a star will experience depends on

Which force is most responsible for the formation of a pre-star?

Stars with surface temperature less than 3000K appear _______

Stellar distances are usually expressed in units called ______

The brightness of a star, if it were at a distance of 32.6 light-years, is its

According to the Big Bang theory, a cataclysmic explosion created the matter in the Universe about _______ years ago

The magnitude of a star as we "see" it from Earth?

Very massive stars terminate in a brilliant explosion called a _______

One light-year is about __________.

A very young, large object that is soon to become a star but is not yet hot enough for nuclear fusion is termed a _________.

What is the main fuel for a red giant

A(n) __________, is a famous interstellar mass that absorbs ultraviolet light from an embedded or nearby star and radiates, or emits this energy as visable light

Which color stars have the hottest surface temperature.

The final stage for a star that is as massive as the Sun

The apparent change in wavelength of radiation caused by the relative motions of the source and the observer is referred to as _________.

Most stars are in this stage of evolution

The apparent change in the the position of a celestial object due to the orbital motion of Earth is called _________

The red shifts exhibited by galaxies can be explained by ________

What is labeled on the y-axis of the H-R Diagram?

This is produced during a supernova event.

An interstellar accumulation of dust and gases is referred to as

Which part of the HR Diagram are the redgiants located?

What is produced as a result medium mass star collapsing?