Back to Home

Blackholes Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Blackholes I | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Chrandra Sees 12 Billion Years Ago

Forum List | Follow Ups | Post Message | Back to Thread Topics
Posted by Richard Ruquist on March 14, 2001 13:12:25 UTC

The orbiting X-ray observatory, according to NASA's Giaconni, has seen the universe as it existed 12 billion years ago. What was seen is a large number of massive black holes in comparison to what we see locally.

My view is that the numbers were not significantly higher. It just that these black holes were still in the strongly mass absorbing stage of their life, and therefore can be easily seen. After they absorb everything in their neigborhood, they settle down to a very long invisible life. The only mechanism we know of to diminish their size is Hawking radiation, which for relatively small and all larger black holes is much too weak to be detected. Only tiny black holes radiate much just before they disappear.

Black holes are forever. That is the destiny of the universe after all the stars burn out.

Chandra now holds the record for looking back in time, with the exception of COBE observing the universal background radiation, an observation that does not yield an age. From Chandra the age of the universe is now pushed back to 13-15 billion years. In another 10 billion years only black holes will be left.

Follow Ups:

Login to Post
Additional Information
About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
Unless otherwise specified, web site content Copyright 1994-2024 John Huggins All Rights Reserved
Forum posts are Copyright their authors as specified in the heading above the post.
"dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
are trademarks of John Huggins