Anglo Australian Observatory Helix Nebula.
Image: Credit Chandra Team NASA:Chandra observation of supernova SN1999em
In late October 1999, a supernova was detected in NGC 1637, a spiral galaxy that is 25 million light years from Earth. Chandra observed the supernova twice soon after the explosion. X-rays, shown by contours overlaid on an optical mage, were detected from 3 million degree gas produced by the supernova. An X-ray source in the center of the galaxy was also detected.
(Credit: X-ray: NASA/CXC/SAO; Optical: Palomar Observatory Digital Sky Survey)
Image:Object Name: Crab Nebula
The Chandra X-ray image of the Crab Nebula shows the central pulsar surrounded by tilted rings of high-energy particles that appear to have been flung outward over a distance of more than a light year from the pulsar. Perpendicular to the rings, jet-like structures produced by high-energy particles blast away from the pulsar.
PHOTO CREDIT: NASA/CXC/SAO