Admire 25 stunning images celebrating the 25th birthday of the Chandra telescope
The ability to detect X-rays also makes Chandra important for complex astronomical missions.
The beauty of the universe in Chandra X-ray wavelengths
The universe is a mysterious world to humans. And it is also irresistibly beautiful. Let's admire the beauty of the universe in X-ray wavelength!
NASA's Chandra observatory has been studying the universe in X-rays since it launched in 1999, but it's not as well known as other observatories like Hubble or Spitzer. Part of the reason is because the universe looks very different—sometimes almost unrecognizable—in X-rays. But it can be an invaluable source of information about distant galaxies and strange space phenomena, especially when X-ray data is combined with other wavelength data into a visible image.
That's why NASA has released this stunning collection of images that combine X-ray observations with other wavelength observations, to show how instruments like Chandra can allow us to see the universe through many different lenses.
The object you see in the top left image is the galaxy M82, with Chandra X-ray data showing the gas jets in blue and pink, while Hubble visible light data shows the galaxy in red and orange. These jets glow in radiating streams at temperatures above ten million degrees Celsius, heated by the energy emitted by multiple supernova explosions.
The middle scene in the top row is a galaxy cluster called Abell 2744. It is a giant collection of galaxies bound together by gravity, and also contains a giant cloud of hot gas that can reach tens of millions of degrees Celsius. The heat of this gas causes it to glow brightly in the X-ray spectrum, in the blue range observed by Chandra.
At top right is one of the brightest supernovae observed in the 1980s, called SN 1987a. Chandra data shows the explosion's shock wave in blue, with Hubble data filling in the rest of the image in other colors.
At bottom right is an image showing a system of material that exists on the edge of a supernova called Eta Carinae, with two stars orbiting closely. This image includes not only Chandra X-ray data but also ultraviolet data collected by Hubble, shown in cyan.
The image in the middle of the bottom row is the famous Cartwheel Galaxy, which takes on a distinctive shape when a small galaxy violently collides with a larger one. Chandra data shows the hot gas emitted from the collision in purple, and Hubble data shows red, green and blue, showing how the collision triggered star formation.
Finally, the bottom left image is the stunning Helix Nebula, which offers a glimpse of what our sun might look like billions of years from now as it runs out of fuel and forms a giant cloud of gas and dust. Here, infrared data from the Spitzer telescope is shown in green and red, optical light data from Hubble is shown in orange and blue, ultraviolet light from the Galaxy Evolution Explorer is shown in cyan, and Chandra data is shown in white, highlighting the image of a dwarf star at the center of the nebula.
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