This video works with the hologram projector given out at the Galaxy Makers exhibition. You can find a little tutorial on how to use it here.
Congratulations on making a galaxy! You can watch a fly around video of your model galaxy here. If you have a pyramid projector and you are viewing this on your phone then select "hologram video" and play in full-screen mode. You need to make sure your phone is playing the movie horizontally (i.e., hold the phone in front you horizontally before laying it flat). The holograms look best in a dark room with the phone brightness on full (see here for an example of how to use your pyramid). To find out more about your galaxy and how it compares to real galaxies use the buttons below.
Here is an image of your model irregular galaxy and also an image of a real irregular galaxy (NGC 1427A) taken with the Hubble Space Telescope. You can slide between the two to compare. An irregular galaxy is a type of galaxy that cannot be classified in any of the main categories of other galaxies (spiral, elliptical or lenticular). Irregular galaxies usually display little to no symmetry and often appear chaotic in appearance. An irregular galaxy can be gas and dust rich but this is not always the case! In most big galaxies there is a supermassive black hole. These objects contain the same amount of material as millions to billions of stars but all crammed into an incredibly small space. However, your model galaxy does not contain a black hole. Perhaps it used to, but it was flung away during a collision with another galaxy!
Here is your unique pie chart for your model irregular galaxy that shows you a break down of what your galaxy is made from (by weight). Irregular galaxies can all be very different and there are not particular rules that say what they should look like. However, they are often associated with galaxy-galaxy collions or near collisions which can result in lots of new stars being formed. What is the difference between the new stars and old stars in your galaxy? Which "ingredient" makes up most of the weight? Find out more about these ingredients on the next few pages.
Stars are big balls of very hot gas that produce their own light. Big galaxies contain billions of stars of different sizes and colours. Old stars are usually redder than young stars because stars get colder as they start to run out of fuel. However, some of the heaviest stars end their lives in gigantic explosions called supernovae. Look at the image of your model galaxy and notice where you find the blue stars.
Gas and dust are an important part of galaxies because they are the materials that stars are made from. In the picture you can see gas around a galaxy, viewed from very far away. This picture was made with a computer and the colours are not real but tell you about the temperature of the gas (hot gas is shown in red). Gas falls onto the galaxy from large distances. This gas will go on to form more stars in the future unless something stops it from getting cold enough to clump together, such as exploding stars or the supermassive black hole.
Did you know that most of the material in the Universe is made of dark matter? Dark matter is the name that we give to matter or "material" that we cannot see and appears to be made up of something other than the regular materials we know about. Astronomers know that this extra dark matter must be present because of the strong effect that its gravity has on light and other objects nearby. This picture shows what the dark matter may look like surrounding a galaxy viewed from a very large distance if you had a special "dark matter" telescope. This model image was made using a computer and the colours are not real; however, bright colours show you where lots of dark matter should be found. Most of the stars in a model galaxy would only found in the central bright region of this picture.
The Astronomy Picture of the Day shows you a new image every day from the world of astronomy, along with an explanation of what it is written by real astronomers.
Space Scoop is a science news website for kids. They cut out all of the confusing jargon and just give you the interesting news from scientists around the world.
Fancy becoming a citizen scientist? Check out Galaxy Zoo, where you can check out cool images of galaxies and help real astronomers by classifying them.
If you would like to find out more information about the simulation and software that produced these images, check out the official EAGLE project website here.