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An X-ray telescope (XRT) is a telescope that is designed to observe remote objects in the X-ray spectrum. X-rays are absorbed by the Earth's atmosphere, so instruments to detect X-rays must be taken to high altitude by balloons, sounding rockets, and satellites.
Dec 11, 2018 · Cameras use lenses to focus light onto a detector (like CCDs or film) to capture a picture. Telescopes like Hubble take images of objects in the cosmos. However, X-rays are so energetic (and have such a small wavelength) that they tend to pass through most things, including mirrors.
Dec 11, 2018 · Similar to the way an optical telescope increases our eye's ability to see faint stars, an X-ray telescope can concentrate the light from an X-ray star onto an electronic eye. An imaging detector can view several X-ray emitting objects simultaneously, or can create pictures of regions of diffuse X-ray emission.
X-ray telescope, instrument designed to detect and resolve X-rays from sources outside Earth’s atmosphere. Because of atmospheric absorption, X-ray telescopes must be carried to high altitudes by rockets or balloons or placed in orbit outside the atmosphere.
- The Editors of Encyclopaedia Britannica
X-rays come from the hottest objects of all, such as clouds of gas between galaxies or the bands of gas spiraling into black holes. Earth’s atmosphere absorbs X-rays, so X-ray astronomers must...
- Damond Benningfield
Nov 17, 2014 · The X-ray emission from these active galactic nuclei is believed to originate from ultra-relativistic gas near a very massive black hole at the galaxy's center. Lastly, a diffuse X-ray emission was found to exist all over the sky.
Jan 26, 2018 · X-rays are given off by objects and processes that are extremely hot and energetic, such as superheated jets of material near black holes and the explosion of a giant star called a supernova. Closer to home, our own Sun emits x-rays, as do comets as they encounter the solar wind.
