Many other stars are visible to the naked eye at night A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity Their immense distances from earth make them appear as fixed points of light.
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Of the tens of billions of trillions of stars in the observable universe, only a very small percentage are visible to the naked eye.
Astronomers say they spotted signs of a giant explosion releasing from a star beyond our solar system, one powerful enough to destroy a planet’s atmosphere.
The meaning of star is a natural luminous body visible in the sky especially at night How to use star in a sentence. In a very broad sense, a star is simply one of those twinkling points of light you can see in the night sky But that’s not terribly satisfying in either lexicological or physical terms.
These large, swelling stars are known as red giants But there are different ways a star’s life can end, and its fate depends on how massive the star is. The simplest way to describe a star is that it is a great ball of fire, but it is more complicated than that A star is a giant ball of hydrogen turning into helium through nuclear fusion.
Where do stars come from
Every star forms in a huge cloud of gas and dust Over time, gravity causes the cloud to contract, drawing the gas closer and closer together As more gas accumulates at the center, it becomes denser and pressure increases This causes it to heat up and begin to glow.
