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Why is the sun and other stars described as luminous?
Because of its brightness and visibility from the naked eye.
What characteristics are used to describe stars?
Stars can be described by their temperature, size (diameter), brightness (luminosity), color, composition, and age. These characteristics help scientists classify and study stars in the universe.
Do stars have the same brightness and sizes?
No. Stars vary greatly in size and brightness.
Which two groups of stars can have similar brightness?
Variable stars and main sequence stars can have similar brightness. Variable stars, like Cepheid variables, can fluctuate in brightness over time, while main sequence stars maintain a relatively stable brightness due to their fusion processes.
What us the relation between temperature and brightness of stars?
The temperature of a star is directly related to its brightness. Hotter stars emit more energy and appear brighter, while cooler stars emit less energy and appear dimmer. This relationship is described by the Stefan-Boltzmann law, which states that the luminosity of a star is proportional to the fourth power of its temperature.
What is a stars brightness known as?
A star's brightness is known as its magnitude. Stars with lower magnitude numbers are brighter than stars with a higher magnitude number.
Temperature and brightness of stars are indicated by what?
Temperature of stars is indicated by their color, with blue stars being hotter than red stars. Brightness of stars is indicated by their luminosity, which is how much light a star emits.
What is the measure of a stars brightness?
Magnitude.
Is shape affects the brightness of the stars?
no
In main-sequence stars how does brightness relate to temperature?
The brightness is very similar to the temperature, the brightness relies on the temperature
What determines how bright stars are?
Size and temperature determine the brightness of stars.
Stars that can change their brightness?
the moon can vary its brightness and the pink elephant called aphadophalis
