by PHY » December 6th, 2006, 6:13 pm
X-ray telescopes like Chandra are not like the telescopes you find in backyards or at the local observatory. In addition to being above the Earth's atmosphere, they need to have special mirrors to detect the X-rays that pass through most objects.
[youtube]http://youtube.com/watch?v=Y2xSl8o-p9s[/youtube]