Stars and Constellations

Objects that heat and light the planets in a system.

A ball of plasma held together by its own gravity.

What are the characteristics of stars?

• Distance

• Magnitude

• Temperature

• Color

Its measurement is in light-years.

• Distance

• Magnitude

• Temperature

• Color

Measure of brightness of celestial objects.

• Distance

• Magnitude

• Temperature

• Color

Answer explanation

Smaller values represent brighter objects than larger values.

Its color indicates the temperature of the star.

Classified by temperature.

Arranged from lowest temp to highest temp (bright - dim).

• Distance

• Magnitude

• Temperature

• Color

Distance which a ray of light would travel in one year.

Equivalent to 6 trillion miles.

186,000 miles per second.

How bright a star appears to be from Earth

How bright a star actually is.

Aka: Luminosity.

Arrange the classification of stars from hottest to coolest.

(O - M)

The hottest star.

Blue in color.

• Type O

• Type B

• Type K

• Type M