Come look around us or swim together in a round to space to know what the story of the universe?!
The universe in short is everything we can touch, sense, measure and reveal. Where it includes living things, planets, stars, galaxies, clouds of universe dust, light and even the same time. Time, space, and matter did not exist before the birth of our universe.
The universe contains billions of galaxies, each containing millions, even billions of stars. Interstellar distances and galaxies are largely empty; however, interstellar spaces and stars contain scattered particles of dust and few hydrogen atoms per cubic centimeter. The space is filled with radiation such as light and heat, and it is also filled with magnetic fields and high-energy molecules called Cosmic Rays.
The universe is incredibly large. The jet fighter will take about a million years to reach the star closest to our sun. If you travel at the speed of light (300 thousand kilometers per second) it will take 100,000 years to cross the Milky Way alone!
No one can know the exact size of the universe; simply because we are unable to see the edge of the universe - if there is an edge to our universe - all we know is that our visible universe is 93 billion light-years Which is cut by light in one year - about 9 trillion kilometers).
We have not always been the same size as scientists believe it began with the great explosion, which happened about 14 billion years ago. Since then, the universe has expanded outward at a very high speed; so the space we see now is billions of times larger than it was at the beginning, while galaxies are moving apart, while the space between them expands more and more.
Astronomers and astronomers are still striving to understand the mysteries of the universe and to understand its origin and composition. March 21, 2018 Streamline science
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Come look around us or swim together in a round to space to know what the story of the universe?! The universe in short is everything we can touch, sense, measure and reveal. Where it includes living things, planets, stars, galaxies, clouds of universe dust, light and even the same time. Time, space, and matter did not exist before the birth of our universe.
The universe contains billions of galaxies, each containing millions, even billions of stars. Interstellar distances and galaxies are largely empty; however, interstellar spaces and stars contain scattered particles of dust and few hydrogen atoms per cubic centimeter. The space is filled with radiation such as light and heat, and it is also filled with magnetic fields and high-energy molecules called Cosmic Rays.
The universe is incredibly large. The jet fighter will take about a million years to reach the star closest to our sun. If you travel at the speed of light (300 thousand kilometers per second) it will take 100,000 years to cross the Milky Way alone!
No one can know the exact size of the universe; simply because we are unable to see the edge of the universe - if there is an edge to our universe - all we know is that our visible universe is 93 billion light-years Which is cut by light in one year - about 9 trillion kilometers).
We have not always been the same size as scientists believe it began with the great explosion, which happened about 14 billion years ago. Since then, the universe has expanded outward at a very high speed; so the space we see now is billions of times larger than it was at the beginning, while galaxies are moving apart, while the space between them expands more and more.
Astronomers and astronomers are still striving to understand the mysteries of the universe and to understand its origin and composition.
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