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What are facts on stars?

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A black hole is a gravitational point that is so powerful that not even light can escape from it.
If Betelgeuse (the star) were placed where our sun is, its outer edge would extend to the orbit of Jupiter.
A star is a colossal, glowing ball of plasma.
The star that is nearest to earth is the Sun.
Almost all elements that are heavier than hydrogen and helium were created inside the core of stars.
The formation of a star begins with a gravitational instability inside a molecular cloud, which is often triggered by shockwaves from supernovae (massive stellar explosions) or the collision of two galaxies (as in a starburst galaxy).
Stars are first formed as clouds of gas and dust. In fact, they basically comprise of hydrogen gas.
Stars are very hot and give off huge amounts of energy, in the form of heat and light.
Stars spend about 90% of their lifetime fusing hydrogen, to produce helium in high-temperature, and in high-pressure reactions near the core.
Every star generates a stellar wind of particles that causes a continual outflow of gas into space.
Most stars are between 1 billion and 10 billion years old.
The oldest star yet discovered is HE 1523-0901, which is an estimated 13.2 billion years old.
Huge main sequence stars can have surface temperatures of up to 50,000 K.
Stars that have really strong gravity become smaller and smaller with time and eventually, turn into black holes.
Stars come in different colors. While hot stars give off blue light, cooler stars give off red light.
Some stars are 600,000 times as bright as our sun.
All the stars that make up Milky Way Galaxy revolve around the center of the galaxy once every 200 million years or so.
Stars twinkle because the light we see coming from them travels through the atmosphere around the earth and there is turbulence in the earth's atmosphere.
Stars that are not white are red dwarfs.
A stars development starts as a nebula. Hydrogen, gas and dust create nebulas.
There ways a star can die. First it can simply burn out of gases or it can happen by a supernova.
A supernova is an exploding star. Supernovas contain at least thirty times more mass than the sun does.
Stars with really strong gravity cause themselves to become smaller and smaller and eventually turn into black holes.
Our galaxy has approximately 250 billion stars and it is estimated by astronomers that there are 100 billion other galaxies in the universe.
A Pulsar is a small star made up of neutrons so densely packed together that if one the size of a silver dollar landed on earth, it would weigh approximately 100 million tons.
The sun is a star. The sun is the nearest star to earth
Without the sun, the earth would be a frozen little ball of darkness without life.
Only 55% of all Americans know that the sun is a star.
Some stars are 600,000 times as bright as our sun.

First answer by Sashak777. Last edit by Sashak777. Contributor trust: 1 [recommend contributor ]. Question popularity: 1 [recommend question].

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