What are stars short answer?
What are stars short answer?
What are stars short answer?
A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. Nuclear fusion reactions in its core support the star against gravity and produce photons and heat, as well as small amounts of heavier elements. The Sun is the closest star to Earth.
What is a star in science?
Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores. Aside from our sun, the dots of light we see in the sky are all light-years from Earth.
What are stars made of definition?
Stars are glowing celestial bodies consisting of mostly hydrogen (90%) and helium (10%) that can be seen in the night sky because nuclear reactions at their core give off heat and light energy.
What are called stars?
A star is an astronomical object comprising a luminous spheroid of plasma held together by its gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night, but their immense distances from Earth make them appear as fixed points of light.
What is the best definition of a star?
Definition of star (Entry 1 of 3) 1a : a natural luminous body visible in the sky especially at night. b : a self-luminous gaseous spheroidal celestial body of great mass which produces energy by means of nuclear fusion reactions.
What is a star class 8?
Stars: Stars are the celestial bodies, which emit light of their own. The Sun is also a star. Ursa Major: It is a group of seven stars and is also known as “Saptarishi”.
What are stars and its types?
The Sun is a yellow dwarf. A red dwarf is a small, cool, very faint, main sequence star whose surface temperature is under about 4,000 K. Red dwarfs are the most common type of star….
| TYPE | Star |
|---|---|
| II | Luminous giants |
| III | Giants |
| IV | Subgiants |
| V | Main sequence stars (dwarf stars) |
What is the operational definition of star?
1a : a natural luminous body visible in the sky especially at night. b : a self-luminous gaseous spheroidal celestial body of great mass which produces energy by means of nuclear fusion reactions.
What are stars for Class 6?
Answer:
| Stars | Planets |
|---|---|
| Stars are celestial bodies made up of gases; they are huge in size and have very high temperatures. | Planets are the celestial bodies that do not have their own heat and light. |
| They have their own heat and light, which they emit in large amounts. | They are lit by the light of stars. |
Who discovered stars?
Galileo Galilei, an Italian scientist, lived from 1564 to 1642. In 1610, he was the first person we know of to use the newly invented telescope to look at the stars and planets.