Which of the following would be considered a Reflection Nebula?

A star’s lifetime, luminosity, and eventual fate is determined by

The masses of stars are determined through the study of?

Use the following table to answer the question. Star Apparent Magnitude (m) Absolute Magnitude (M) m-M Spectral Type 1 -1.46 1.46 0 F0 2 -0.72 -2.5 1.78 A1 3 0.12 -8.1 8.22 B8 4 0.41 -7.2 7.61 M2 5 -0.27 4.4 -4.67 G2     In which star’s spectrum are the hydrogen lines the strongest?

Use the following table to answer the question. Star Apparent Magnitude (m) Absolute Magnitude (M) m-M Spectral Type 1 -1.46 1.46 0 F0 2 -0.72 -2.5 1.78 A1 3 0.12 -8.1 8.22 B8 4 0.41 -7.2 7.61 M2 5 -0.27 4.4 -4.67 G2     Put the stars in order from Hottest to Coolest.

Sunspots are dark regions found on the suns’

Stellar spectra were originally classified using what lines?

Use the following table to answer the question. Star Apparent Magnitude (m) Absolute Magnitude (M) m-M Spectral Type 1 -1.46 1.46 0 F0 2 -0.72 -2.5 1.78 A1 3 0.12 -8.1 8.22 B8 4 0.41 -7.2 7.61 M2 5 -0.27 4.4 -4.67 G2     Which star would appear the brightest in the night sky?

The main cause of the differences seen between the various types of stellar spectra is the difference in __________ from star to star.

When the sun leaves the main sequence it will turn into a red giant. About how big will the radius be?