Skip to main content

What is beyond outer space?

 Planets, stars and galaxies

outer space

NAJAM UL GUL

At the beginning of your trip through space, you might recognize some of the sights. The Earth is part of a group of planets that all orbit the Sun – with some orbiting asteroids and comets mixed in, too.

You might know that the Sun is actually just an average star, and looks bigger and brighter than the other stars only because it is closer. To get to the next nearest star, you would have to travel through trillions of miles of space. If you could ride on the fastest space probe NASA has ever made, it would still take you thousands of years to get there.


If stars are like houses, then galaxies are like cities full of houses. Scientists estimate there are 100 billion stars in Earth’s galaxy. If you could zoom out, way beyond Earth’s galaxy, those 100 billion stars would blend together – the way lights of city buildings do when viewed from an airplane.


Recently astronomers have learned that many or even most stars have their own orbiting planets. Some are even like Earth, so it’s possible they might be home to other beings also wondering what’s out there.

You would have to travel through millions of trillions more miles of space just to reach another galaxy. Most of that space is almost completely empty, with only some stray molecules and tiny mysterious invisible particles scientists call “dark matter.”

outer space


Using big telescopes, astronomers see millions of galaxies out there – and they just keep going, in every direction.


If you could watch for long enough, over millions of years, it would look like new space is gradually being added between all the galaxies. You can visualize this by imagining tiny dots on a deflated balloon and then thinking about blowing it up. The dots would keep moving farther apart, just like the galaxies are.


Is there an end?

outer space


If you could keep going out, as far as you wanted, would you just keep passing by galaxies forever? Are there an infinite number of galaxies in every direction? Or does the whole thing eventually end? And if it does end, what does it end with?


These are questions scientists don’t have definite answers to yet. Many think it’s likely you would just keep passing galaxies in every direction, forever. In that case, the universe would be infinite, with no end.


Some scientists think it’s possible the universe might eventually wrap back around on itself – so if you could just keep going out, you would someday come back around to where you started, from the other direction.


One way to think about this is to picture a globe, and imagine that you are a creature that can move only on the surface. If you start walking any direction, east for example, and just keep going, eventually you would come back to where you began. If this were the case for the universe, it would mean it is not infinitely big – although it would still be bigger than you can imagine.


In either case, you could never get to the end of the universe or space. Scientists now consider it unlikely the universe has an end – a region where the galaxies stop or where there would be a barrier of some kind marking the end of space.


But nobody knows for sure. How to answer this question will need to be figured out by a future scientist.




Labels:
Location: Jammu & Kashmir

Comments

Post a Comment

Popular posts from this blog

WATCH INSTAGRAM STORIES ANONYMOUSLY!!!?

 If you want to see anyone's Instagram story without letting them know, If you've ever wanted to be a fly on the wall at an Instagram Story, then this blog post is for you.  In this post, I'll tell you all about the best websites that will let you watch anyone's stories anonymously. In addition to that, you will not need to login into that website. Ahead of time, though, there are a few things that everyone should know before trying to spy on someone else's Instagram Stories. You need to have a bit of patience in order to make this work, given that there's always a chance that the one you're spying on could beat you to it. Most importantly, you can't expect this to work for every account that you try it on. There's also no way of knowing how much of the stories you'll actually be able to see and how long the access will last for. However, you cannot be able to see the stories of those who have a private account. below are the links to some websit...
Post a Comment
Read more

Mechanical and optical mouse

  How does the Mechanical Mouse work? A mechanical mouse consists of a heavy rubber ball whose movement makes the cursor move on the screen. Commonly known as the ‘rolling rubber ball’ mouse, it is considerably heavy, thanks to the rubber ball, a few wheels, and a number of other mechanical parts present inside it. When you move the mouse, the ball rolls beneath it, pushing the two plastic wheels/rollers linked to it in the process. One of those wheels detects side-to-side movement (x-axis wheel) and the other (y-axis wheel) detects movement in the up-and-down direction. Both of these wheels consist of spokes that ‘break’ a thin light beam inside the mouse. The number of times the beam breaks helps to calculate how far the mouse has moved. For instance, when you move the mouse straight up, the y-axis wheel turns. The farther up you go, the more the ball pushes the wheel and the more it breaks the light beam. This helps to determine how far the mouse has moved straight up....
Post a Comment
Read more

How do Ants sense Food?

  S ugar has a slight odor, particularly granulated beet sugar. While all species of ants can differentiate between a wide variety of odors, the smelling range differs from a few centimeters to meters. Desert ants can smell sugar from up to 3 meters. the food sources that ants cannot smell from a distance they 'smell' it (contact chemoreception) by touching it. So in a way, all the food they detect, they detect it by smelling. So yes, ants smell (although contact chemoreception is more like taste) the sugar. The ant colonies send scout ants to search for food in various directions, often up to a range of 100 to 200 meters.(Depends on the territorial boundary and time of the year). The scout marches steadily in less circuitous paths initially if it has memories of previous feeder locations. (Ants use visual landmarks, and a stereo-smell system to create an odor map and navigate) Periodically it will halt and look for olfactory cues. It will then take into a more circuitous rando...
Post a Comment
Read more