I want to know all about space,big bang,black hole,white holeetc
Answers
Explanation:
The Big Bang Theory
Scientists have evidence that indicates our Universe (including all the stars, galaxies and planets) began about 13.8 billion years ago. The illustration on the right helps to show how the Universe expanded from a tiny "singularity" we call the "Big Bang", which was no bigger than an electron, into the infinitely large Universe we know today.
And the Universe continues to expand! To get a blow-by-blow explanation of the events, click on the NOVA website, the History of the Universe, which describes it in more detail. Once you get to that webpage, click on the button that says "Launch Interactive." Your computer will need to run Adobe Flash. Don't worry if you're not able to do this.
What is a Light Year?
Looking deep into the universe with the Hubble Space telescope, you can see galaxies as far away as 13 billion light years away.
A "light year" is how far light will travel in a year or, ~6 trillion miles. To give an idea of how fast that is, imagine that we could flip a switch to turn off the sun. The sun is about 93 million miles away from Earth. [For comparison, the distance across the United States is 3,000 miles.] The speed of light is 186,000 miles per second. By "turning off" sun, we would have to wait about 8 minutes to notice that the light has gone out.
Stars and galaxies are "light years" away, which means that when a star only 1 light year away is "turned off", we would have to wait an entire year before we noticed here on Earth. That's why telescopes are often called time machines. We can look back in time by looking at light that left a distant star billions of light years ago. The Hubble Deep Space image (on the right) was released in 1996 and shows the light from galaxies over 13 billion light years away when the Universe was much smaller. The image shows galaxies as they were over 13 billion years ago, even though the image was taken in 1996. Many of those galaxies have stars that were long gone by the time we saw them.
Earth's location in the Universe
Earth is located the solar system, which orbits our Sun. The sun is but one of billions of stars located in one arm of the Milky Way Galaxy. The Milky Way galaxy belongs to a group of about 30 galaxies in the universe called the Local Galactic Group. Andromeda galaxy is also in the Local Galactic Group and is also a spiral galaxy with over a trillion stars. The Local Galactic Group belongs to a a much larger "supercluster" of galaxies called the Virgo Supercluster, which belongs to a group of local neighboring superclusters. Click on the image to see a closer view of each image below.