This is amazing even though it is an artist's rendition of what we can see through the Hubble space telescope!
A growing black hole, called a quasar, can be seen at the center of a faraway galaxy in this artist's concept. Using NASA's Spitzer and Chandra Space Telescopes, astronomers discovered swarms of similar quasars hiding in dusty galaxies in the distant universe.
The new-found quasars belong to a long-lost population that had been theorized to be buried inside dusty, distant galaxies, but were never actually seen. While some quasars are easy to detect because they are oriented in such a way that their X-rays point toward Earth, others are oriented with their surrounding doughnut-clouds blocking the X-rays from our point of view. In addition, dust and gas in the galaxy itself can block the X-rays.
|
No comments:
Post a Comment