CONSTELLATIONS
, WHAT ARE STARS?
• Stars are balls of hot gas, mostly Hydrogen and Heliu
• A certain star’s color varies upon the Temperature.
, CHARACTERISTICS OF A STAR
• BRIGHTNESS
Two characteristics define brightne
luminosity and magnitude. Luminosity is
amount of light that a star radiates. The size of
star and its surface temperature determine
luminosity. Apparent magnitude of a star is
perceived brightness, factoring in size a
distance, while absolute magnitude is its t
brightness irrespective of its distance from earth
, WHAT ARE STARS?
• Stars are balls of hot gas, mostly Hydrogen and Heliu
• A certain star’s color varies upon the Temperature.
, CHARACTERISTICS OF A STAR
• BRIGHTNESS
Two characteristics define brightne
luminosity and magnitude. Luminosity is
amount of light that a star radiates. The size of
star and its surface temperature determine
luminosity. Apparent magnitude of a star is
perceived brightness, factoring in size a
distance, while absolute magnitude is its t
brightness irrespective of its distance from earth