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There are 32 videos in this category and 2 videos in 1 subcategory.
Category Videos
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Not Right For WatchKnowLearn
Ages: 12 - 18
1740 Views:
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Some scientists believe that black holes may have played an important role in the creation of the universe in this interesting video from BBC science show 'Supermassive Black Holes'.
December 7, 2009 at 11:43 PM
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Not Right For WatchKnowLearn
Ages: 13 - 18
1296 Views:
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Concepts: Gravity Well, Black Hole, Event Horizon, Singularity, How we see Blackholes -------------- Part of a Blended Classroom taught at Millard West High. (07:42)
September 20, 2014 at 06:32 PM
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Not Right For WatchKnowLearn
Ages: 16 - 18
1215 Views:
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Evidence has been accumulating for several decades that many galaxies harbor central mass concentrations that may be in the form of black holes with between a few million to a few billion time the mass of the Sun.
In this public lecture, Professor... Genzel discusses measurements over the last two decades, employing high resolution infrared and radio imaging and spectroscopy on large ground-based telescopes that prove the existence of such a massive black hole in the centre of our Milky Way, beyond any reasonable doubt. These data also provide key insights into its properties and environment.
Future interferometric studies of the Galactic Center black hole promise to be able to test gravity in its strong field limit. Professor Genzel also briefly summarizes the cosmological evolution of massive black holes.
This event is brought to you by the Australian Institute of Physics and the Black Hole Society, and took place on Monday 27 July 2009. (1:08:04)
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July 30, 2012 at 04:18 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1213 Views:
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On Sept. 16, NASA's Swift satellite detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy. The outburst, produced by a rare X-ray nova, announced the presence of a previously unknown stellar-mass black h...ole. (02:17)
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October 5, 2012 at 06:11 PM
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Not Right For WatchKnowLearn
Ages: 10 - 18
1129 Views:
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Scientists explain how NASA's newest mission of exploration will gather important data about one of the Universe's most interesting and perplexing phenomena. (35:44)
May 30, 2012 at 07:43 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1047 Views:
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Astronomers using NASA's Swift satellite recently detected a rise in high-energy X-rays from a source toward the center of our Milky Way galaxy. The outburst produced by a rare X-ray nova, came from a previously unknown stellar-mass black hole. (02:0...8)
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October 6, 2012 at 10:07 AM
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Not Right For WatchKnowLearn
Ages: 13 - 18
1030 Views:
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Meet the new record-holder for the LARGEST BLACK HOLE IN THE UNIVERSE (so far) in this EXPANDED and UPDATED version (in 1080p) of our most popular Cosmic Journeys. Our Milky Way may harbor millions of black holes... the ultra dense remnants of dead s...tars. But now, in the universe far beyond our galaxy, there's evidence of something far more ominous. A breed of black holes that has reached incomprehensible size and destructive power. Just how large, and violent, and strange can they get? (24:59)
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September 27, 2012 at 07:37 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
845 Views:
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This animation compares the X-ray 'heartbeats' of GRS 1915 and IGR J17091, two black holes that ingest gas from companion stars. GRS 1915 has nearly five times the mass of IGR J17091, which at three solar masses may be the smallest black hole known. ...(01:32)
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October 21, 2012 at 11:20 AM
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Not Right For WatchKnowLearn
Ages: 11 - 18
675 Views:
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Astronomers from the University of Maryland, College Park (UMCP) and NASA's Goddard Space Flight Center have uncovered rhythmic pulsations from a rare breed of black hole in archival data from NASA's Rossi X-ray Timing Explorer (RXTE) satellite. The ...signals provide compelling evidence that the object, known as M82 X-1, is one of only a few midsize black holes known. (02:18)
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August 19, 2014 at 11:59 AM
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Not Right For WatchKnowLearn
Ages: 12 - 18
235 Views:
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The Milky Way's super-massive black hole is generally a picky eater, but NASA's NuSTAR spacecraft recently caught it in the act of having a snack! (03:24)
November 18, 2012 at 07:37 PM
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