universe

According to this Hertzsprung-Russell Diagram which stars are brightest?

• Purple
• Red
• Blue
• Yellow

The Sun's position in the Milky Way galaxy is on the _______ of a spiral away from the center.Skip
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• Center
• Edge
• Middle
• Outside

Huge clouds of dust and gas are called

• Star
• Nebulae
• Neutron Star
• Comets

Luminosity measures a star's _____________________.

• Color
• Temperature
• Brightness

A huge collection of stars is a?

• Universe
• Galaxy
• Movie
• Nebulae

Proxima Centauri is the closest star to Earth after the Sun and is located 4.3 light years away from Earth. How long does it take light from Proxima Centauri to reach Earth?

• 1 year
• 4.3 years
• 43 years
• 10 trillion years

Light Years are a measure of - 

• time
• speed
• distance
• light

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

Which star has the lowest luminosity?

• A
• B
• C
• D

Which star has the lowest temperature?

• A
• B
• C
• D