Stars Passage

Front

What is a light year?

Back

A light year is a measurement of distance that represents how far light travels in one year, approximately 9.5 trillion kilometers.

Front

What does the term 'apparent magnitude' refer to?

Back

The brightness of a star as seen from Earth.

Front

What is 'absolute magnitude'?

Back

A measure of the intrinsic brightness of a star, defined as the brightness it would have at a standard distance of 10 parsecs.

Front

Which star has an absolute magnitude of 0.2?

Back

Arcturus.

Front

How far does light travel in one year?

Back

Approximately 9.5 trillion kilometers.

Front

What is the highest absolute magnitude among the following stars: Red Supergiant -10, Bellatrix -5, Sirius 1.24, Sun 4.83?

Back

Red Supergiant -10.

Front

What is the difference between apparent and absolute magnitude?

Back

Apparent magnitude measures how bright a star appears from Earth, while absolute magnitude measures its intrinsic brightness at a standard distance.

Front

What is a star's brightness affected by?

Back

A star's brightness can be affected by its distance from Earth and its intrinsic luminosity.

Front

What is the significance of a star's absolute magnitude?

Back

It allows astronomers to compare the true brightness of stars regardless of their distance from Earth.

Front

What type of star is Arcturus?

Back

Arcturus is a red giant star.