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                           : High@L3.2

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