Characteristics of Stars

Front

What are stars primarily composed of?

Back

Hydrogen (60-80%) and Helium (20-40%), along with other elements like Oxygen, Neon, Carbon, and Nitrogen.

Front

What does luminosity measure in stars?

Back

The amount of light a star radiates, determined by the star's size and surface temperature.

Front

What is the difference between apparent magnitude and absolute magnitude?

Back

Apparent magnitude is brightness as seen from Earth, while absolute magnitude indicates the true brightness of a star.

Front

What color are the hottest stars and what is their surface temperature?

Back

Blue-White stars, with surface temperatures around 50,000°C.

Front

What color are the coolest stars and what is their surface temperature?

Back

Red stars, with surface temperatures around 3,000°C.

Front

How are stars classified based on size?

Back

Stars are classified into supergiant, giant, medium-sized, white dwarf, or neutron.

Front

What is the mass of Rigel in solar masses?

Back

Rigel has a mass of 3.5 solar masses.

Front

What is the significance of density in measuring star mass?

Back

The mass of a star can vary greatly depending on its density, even among stars of similar size.

Front

What galaxy does our solar system reside in?

Back

The Milky Way galaxy.

Front

What are star clusters?

Back

Groups of stars within galaxies.