Star Brightness Vocabulary

Front

Star

Back

A celestial ball of burning gas

Front

Luminosity

Back

Front

Magnitude

Back

Front

Apparent Magnitude

Back

Front

Constellation

Back

Front

Lightyear

Back

The unit of astronomical distance that equals the distance that light travels in 1 year

Front

Betelgeuse

Back

• It is a reddish star about 1000 times bigger than the sun and more than 600 light years away. It is also the ninth-brightest star in the night sky and second-brightest in the constellation of Orion.

Front

Habitable Zone

Back

An area around a star that is approximately the right distance to support liquid water on the surface of a planet.

Front

Sirius

Back

• The brightest star in the night sky. It is also 500,000 times further from us than the sun.

Front

Our sun appears brighter than other stars because of its ______________ to Earth.

Back

closeness