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What else can I help you with?
Stars glow because?
Because they are extremely hot.
Which category of stars is extremely hot and dim?
White dwarves.
What is the Collective noun for an irregular luminous band of stars?
An irregular luminous band of stars is called a galaxyof stars.
What spectral class is the hottest star under?
O. This is the class of the blue/white giants.
Are the stars and moon luminous?
Stars are luminous, shine by themseves. Moon isn't, it can only reflect light.
Which stars are very cool but very luminous?
Red supergiant stars, such as Betelgeuse and Antares, are examples of stars that are very cool in temperature while still being extremely luminous due to their large size and high brightness. Despite their cool surface temperatures, they radiate a tremendous amount of energy into space.
Are blue stars more luminous?
Blue stars are more luminous than other main sequence stars but not necessarily brighter than giant and supergiant stars.
Are a stars outer layers hot?
Yes! Stars are made out of many gases that are extremely hot. But a sun can also have black spots on its surface which are cold.
What are stars really?
Stars are enormous balls of extremely hot gas, which are similar to our sun, but much farther away.
Do stars produce heat?
Yes. Stars are extremely hot. The sun is one of them. Some stars are even hotter and brighter than the sun.
What color are very heavy stars?
Generally, the more massive a star is, the more luminous they are. The most luminous stars appear blue.
Where are most stars plotted on an HR diagram?
Most stars are plotted along the main sequence in the Hertzsprung-Russell (HR) diagram, which extends diagonally from the upper left (hot and luminous stars) to the lower right (cool and less luminous stars). This is because the majority of stars, including our Sun, spend the majority of their lives in the main sequence phase where they are fusing hydrogen into helium.
