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Latest Black hole Stories

NASA Satellite Discovers Cloudy Conditions Around Black Holes
2014-02-19 13:27:43

An international team of astronomers used NASA’s Rossi X-ray Timing Explorer (RXTE) satellite data and found huge clouds of gas orbiting supermassive black holes.

Computer Simulations Reveal The Destruction Of A Star As It Falls Into A Black Hole
2014-02-19 05:24:10

Exploring the universe's most violent events using computer simulations is what Enrico Ramirez-Ruiz does. So in 2012, when the first detailed observations of a star being ripped apart by a black hole were reported in Nature, Ramirez-Ruiz was eager to compare the data to his simulations.

New Look At Old Galactic Friend
2014-02-07 09:05:06

Just weeks after NASA’s Chandra X-ray Observatory began operations in 1999, the telescope pointed at Centaurus A (Cen A, for short).

Radio Telescope Arrays Can Be Used To Locate Cosmic Heating From The Earliest Black Holes
2014-02-06 05:05:02

In what is being described as landmark discovery about the origins of the universe, Tel Aviv University researchers report in the journal Nature that black holes, formed from the first-ever stars, heated the gas throughout space much later than previously believed.

Active Supermassive Black Holes Discovered In Two Merging Galaxies
2014-01-28 13:17:31

Astronomers publishing a paper in the Astrophysical Journal say they have found that two merging galaxies have active supermassive black holes.

Black Holes Unlikely To Help Explain Dark Matter
2014-01-21 04:38:37

Dark matter, the mysterious substance that comprises more than 85 percent of the universe, is unlikely to be made of primordial black holes due to the existence of neutron stars.

Dead Star, Black Holes Highlighted In Dazzling NASA NuSTAR Imagery
2014-01-10 10:11:37

A pair of dazzling images from NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) highlights the observatory's impressive imaging capabilities for objects both near and far.

Hypervelocity Stars Escape Galaxy
2014-01-10 08:44:12

A surprising new class of hypervelocity stars has been discovered by an international team of astronomers.

Swift Sees X-ray Action In Milky Way's Center
2014-01-09 06:14:19

Scientists have discovered a rare celestial entity that could help test predictions of Albert Einstein’s theory of general relativity.

Abell 1795
2014-01-09 04:13:33

NASA’s Chandra X-ray Observatory has helped astronomers witness the first event of a black hole destroying a star in a dwarf galaxy.


Latest Black hole Reference Libraries

7_d6897d09acee1dd0c34d0fbf62ff7d0b2
2004-10-19 04:45:44

X-Ray Astronomy -- Although the more energetic X-rays (E > 30 keV) can penetrate the air at least for distances of a few meters (they would never have been detected and medical X-ray machines would not work if this was not the case) the Earth's atmosphere is thick enough that virtually none are able to penetrate from outer space all the way to the Earth's surface. X-rays in the 0.5 - 5 keV range, where most celestial sources give off the bulk of their energy, can be stopped by a few...

6_0ba47eab12382e6a4e2cc12b1c7ddf782
2004-10-19 04:45:42

Quasar -- A quasar (from quasi-stellar radio source) is an astronomical object that looks like a star in optical telescopes (i.e. it is a point source), but has a very high redshift. The general consensus is that this high redshift is cosmological, the result of Hubble's law and that their redshift indicates that they are typically very distant from Earth; we observe them as they were several billions of years ago. Since we can see them despite their distance, they must emit more...

3_19a73d2fffe222de349da50260d972802
2004-10-19 04:45:40

Cygnus X-1 -- Cygnus X-1 (often abbreviated to Cyg X-1) is an X-ray source in the Cygnus constellation considered to be one of the most likely black hole candidates. The optical counterpart (HDE 226868) is a variable 8.9 magnitude star (visible with good binoculars in good observing conditions.) at right ascension 19 h 56.5 min and declination of 35 deg 4 min (for 1950 epoch). Cyg X-1 is a binary star that contains a O9-B0 supergiant (with a surface temperature of 31000 Kelvin) and a...

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Word of the Day
quotha
  • Forsooth! indeed! originally a parenthetical phrase used in repeating the words of another with more or less contempt or disdain.
The word 'quotha' is an alteration of 'quoth he'.
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