The Sky at Night 14.August.2023 - Black Holes Searching for the Unknown (1280x720p HD, 50fps, soft Eng subs)
There has never been a more exciting time to study one of the most mysterious phenomena in space. This month, The Sky at Night team investigate the science of black holes and discover the incredible techniques being used to uncover their secrets, and even help us answer bigger questions about our universe. / / Chris meets with Dr Becky Smethurst at the University of Oxford to learn how a black hole forms from the death of a star. He also investigates whether black holes deserve their menacing portrayal in popular culture. He describes what would happen if we got too close to the event horizon and how black holes might actually play a role in lighting up the universe. / / Maggie explores how scientists are trying to understand more about black holes by meeting Dr Tessa Baker, who works on LIGO. The Laser Interferometer Gravitational-Wave Observatory is one of the world's largest physics experiments and is not your usual type of observatory; instead of looking - it listens. The next observation run has just started, and Maggie learns what they are hoping to find. / / Chris meets with Dr James Nightingale, who has recently discovered one of the largest black holes in space using brand new computational technology and the age-old technique of gravitational lensing. They explore the relationship between black holes and galaxies, as it is thought that within the centre of every galaxy lies a supermassive black hole. / / We visit our in-house stargazing expert, Pete Lawrence, who shows us how to find a black hole in the sky, and Saturn at its brightest and best. / / Finally, George Dransfield visits Dr Silke Weinfurtner at her black hole laboratory, where they are simulating features of black holes here on Earth. They use fluid systems to perform experiments to try to determine if phenomena we think occur around black holes could actually happen.
First broadcast: 14 August 2023
Duration: 30 minutes
Torrent dead? Request reseed at torrentgalaxy.org - or ask at elsonroa at tutanota.com
Media info:-
General
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 1.05 GiB
Duration : 29 min 3 s
Overall bit rate mode : Variable
Overall bit rate : 5 194 kb/s
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 29 min 3 s
Bit rate mode : Variable
Bit rate : 5 055 kb/s
Maximum bit rate : 7 605 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 50.000 FPS
Minimum frame rate : 25.000 FPS
Maximum frame rate : 90 000.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.110
Stream size : 1.03 GiB (97%)
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Codec configuration box : avcC
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 29 min 3 s
Bit rate mode : Variable
Bit rate : 128 kb/s
Maximum bit rate : 132 kb/s / 132 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 26.6 MiB (2%)
Language : English
