| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,521,048,768 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
BHC |
0.03 sec. |
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? References in periodicals archive |
|---|
Another team, led by Gordon Garmire of Pennsylvania State University in State College, has also traced the sources of the high-energy X-ray background and found a multitude of black hole candidates. Reports earlier this year about black hole candidates - many based on observations with the Hubble Space Telescope - beg some fundamental questions: What are the criteria for finding a supermassive black hole, and what constitues the nearest thing to absolute proof? And unlike other recently reported black hole candidates (SN: 1/25/92, p. |
| Acronyms and Abbreviations |
| Free Tools: |
For surfers:
Browser extension |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|