Quantcast

Latest Kelly Holley-Bockelmann Stories

The Milky Way's Violent Past
2013-03-06 04:20:09

[ Listen to the three-part interview with Prof. Holley-Bockelmann in RedOrbit´s Your Universe Today Podcasts ] John P. Millis, Ph.D. for redOrbit.com — Your Universe Online As astronomers peer out into the distant reaches of the Universe they find that some galaxies are emitting enormous amounts of radiation from their cores. Supermassive black holes at the center of these galaxies consume the surrounding gas and dust, heat it up, and thrust it into outer space at nearly the...

Supermassive Black Holes Podcast
2013-02-13 11:56:55

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Click here to stream the “Supermassive Black Holes” podcast (Or right-click on the above link to download the file to your computer) Only a couple decades ago, the mere idea of supermassive black holes — those that are millions or billions of times more massive than our sun — seemed unthinkable to most astronomers. Now, however, we believe that these enormous objects lie at the center of nearly...

Facts About Black Holes Podcast
2013-01-28 09:23:01

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Click here to stream "Facts About Black Holes — Separating Myth From Reality" (Or right-click on the above link to download the file to your computer) When most people think of a black hole, they tend to envision it as sort of cosmic vacuum cleaner, slowly sucking in and devouring everything in its vicinity. But are black holes really like this? And what would happen if you fell into a black hole? What about a...

How Stars Die And Black Holes Form: Your Universe Today Podcasts
2013-01-23 12:17:54

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Click here to stream "How Stars Die And Black Holes Form": Your Universe Today Podcasts (Or right-click on the above link to download the file to your computer) Black holes are among the most exotic, mysterious and perplexing objects in the Universe. They are swallowers of light, destroyers of stars and the engines that drive our galaxies. Some believe they could even hold the key to interstellar travel and may perhaps...

Image 1 - Astronomers Find Hypervelocity Stars Ejected From The Galactic Core
2012-05-01 02:53:18

It´s very difficult to kick a star out of the galaxy. In fact, the primary mechanism that astronomers have come up with that can give a star the two-million-plus mile-per-hour kick it takes requires a close encounter with the supermassive black hole at the galaxy´s core. So far astronomers have found 16 of these “hypervelocity” stars. Although they are traveling fast enough to eventually escape the galaxy´s gravitational grasp, they have been discovered while...

a532683264e83965e8e8e911e44f38ec1
2008-01-09 14:02:28

If the latest simulation of what happens when black holes merge is correct, there could be hundreds of rogue black holes, each weighing several thousand times the mass of the sun, roaming around the Milky Way galaxy. "Rogue black holes like this would be very difficult to spot," says Vanderbilt astronomer Kelly Holley-Bockelmann, who is presenting the results of the supercomputer simulation at a meeting of the American Astronomical Society on Jan. 9 in Austin, Texas. Much of the research was...


Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
Related