Our universe

Our universe

Our Universe is complex. We can touch, feel that and we can detect that also. It consists of living and non-living things, planets, stars, galaxies, dust clouds, light, and even time.

What do we know about our universe -

In our Universe consists of billions of galaxies and each galaxy consists of billions of stars. In-universe space between the stars and galaxies is broadly blank. Stars and planets consist of scattered molecules of dust and hydrogen.   

Our universe

Our Universe is very big. if we go by fighter plane by the speed of light to reach the nearest star to the sun. It would take a modern jet fighter more than a million years to reach the nearest star to the Sun. It will take 100,000 and more than years to cross our milky way galaxy.  

The speed of light  = 300,000 km per second

Universe has not the same size.No one knows what is the size of our universe. Scientists say our universe is made from the big bang. Our universe occurs 14 billion yr ago. it began in a Big Bang, which is nearly 14 billion years ago. our universe has been expanding very quickly.

Light year - The total distance light travels in 1 yr which is called a light-year.

1 Light year - 9.4607 pm(about 9 trillion km)

It's believed that stars type once dense knots and wrinkles in gas clouds - like nebulae - collapse under their own weight, starting up the stellar accretion method. however it is also believed that it's to be cooling gas; the warmer the gas, the more durable it's for stars to make.

Evidence for this is often thought to be found within the supermassive black holes within the middle of most galaxies. once this unit active, they heat the items around them, one issue we tend to thought was in operation to quench star formation even once the gas was out there.

This heating could also be created by exploding stars. And matter - the mysterious unknown stuff adding mass to the Universe - is to boot thought to heat gas, so, therefore, it had been thought that this contends employment in preventing star formation, too.

But this is often not what the researchers saw in their simulations.

"As we tend to come back earlier and earlier inside the Universe, we'd expect the interest to be denser, so the gas to be getting hotter and hotter. this is {often|this can be} often unhealthy for star formation, thus we tend to own thought that many galaxies within the early Universe have to be compelled to have stopped forming stars an extended time we're gone," Behroozi same.

To know about our solar system, click on this link -  our solar system