Group W Stars

a star is a plasma sphere held by its own gravity it is powered by hydrogen making it shine. stars are luminous objects(produces its own light) the closest star to earth is the sun


the sun example of a star


Many stars appear in the sky and can be seen by the naked eye the most visible stars(prominent) are grouped into constellations such as the big dipper and the constellation leo.the most visible aside from the constellation gain proper names.Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations. However, most of the stars in the Universe, including all stars outside our galaxy, the Milky Way, are invisible to the naked eye from Earth. Indeed, most are invisible from Earth even through the most powerful telescopes.

example of a constellation



A star is formed by gas from other stars most of which are hydrogen gas.The formation of a star begins with gravitational instability within a molecular cloud, caused by regions of higher density - often triggered by compression of clouds by radiation from massive stars, expanding bubbles in the interstellar medium, the collision of different molecular clouds, or the collision of galaxies (as in a starburst galaxy).It takes billions of years for a star to form accurately 10 billion years.The first phase is basically only gas,in time the gas is pulled by gravity forming a ball of gas which reaches very high temperature

Massive stars life cycle is different than average stars since the massive stars contain more hydrogen and more mass, after becoming an early star in time about 5 billion years the massive star blows up and becomes a super red giant ball of mostly hydrogen this happens due to the deprivation of hydrogen.After becoming a super red giant the star explodes into a supernova the explosion is so massive it can exterminate plants within its radius and possibly a whole solar system if the star is indeed really huge after exploding into a supernova the remainder becomes either a harmless neutron star or a deadly black hole.

star during its final stages of life
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