Science, Tech, Engineering and Math

The new BLACK HOLE image explained by an ASTROPHYSICIST | Your questions answered
00:20:20
KwabenaOforiOsei
2 Views · 11 hours ago

The Event Horizon Telescope collaboration just released the first ever image of the Milky Way’s supermassive black hole (the same group that took the first ever image of a black hole in 2019 - the one in the centre of the Messier 87 galaxy). What do we learn from this image? Why is it orange? Why is it different to the M87 image? Why is it blurry? And can we observe the same thing with the James Webb Space Telescope?

Why yes this was filmed and edited in a single day. Thanks for noticing. Yes I am exhausted.

Read more about the newly released image here from @ESOobservatory: https://www.eso.org/public/news/eso2208-eht-mw/

Event Horizon Telescope collaboration (2022; Paper I) - https://iopscience.iop.org/art....icle/10.3847/2041-82
The plan to observe the galactic centre with JWST - https://www.stsci.edu/jwst/phase2-public/1939.pdf
TED talk on how computer algorithm to fill in the gaps works from Katie Bouman - https://www.youtube.com/watch?v=BIvezCVcsYs


00:00 - Introduction
01:04 - How do we take images like this?
03:37 - How does this compare to the M87* image?
05:51 - Why is the image blurred?
08:30 - Why is it orange?
09:53 - What are the 3 bright blobs?
11:29 - What angle are we seeing this from?
17:07 - Will we observe this with JWST?
19:10 - Outro
19:36 - Bloopers

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👩🏽‍💻 I'm Dr Becky Smethurst, an astrophysicist at University of Oxford (Christ Church). I love making videos about science with an unnatural level of enthusiasm. I like to focus on *how* we know things, not just what we know. And especially, the things we still don't know. If you've ever wondered about something in space and couldn't find an answer online - you can ask me! My day job is to do research into how supermassive black holes can affect the galaxies that they live in. In particular, I look at whether the energy output from the disk of material orbiting around a growing supermassive black hole can stop a galaxy from forming stars.

http://drbecky.uk.com
https://rebeccasmethurst.co.uk

The First Image of the Milky Way's Black Hole | Sagittarius A*
00:04:15
KwabenaOforiOsei
9 Views · 4 days ago

The first image of the Milky Way's supermassive black hole, Sagittarius A*, has been released by the Event Horizon Telescope. Sgr A* is a supermassive black hole that lies 27,000 light years away from Earth at the center of the galaxy. Its mass is about 4 million times the mass of the Sun but a thousand times less than the black hole at the center of the M87 galaxy, the image of which was released back in 2019.

ANNOUNCEMENT: https://bit.ly/3FH9qKd

Quick rundown of our Solar system and Universe beyond
00:48:53
KwabenaOforiOsei
2 Views · 5 days ago

This video gives us a quick tour of our solar system and the universe that surrounds it.

A Picture of the Our Milky Way's Supermassive Black Hole
00:19:47
KwabenaOforiOsei
2 Views · 5 days ago

This is an image of the supermassive black hole, Sagittarius A*, at the center of our Milky Way galaxy.
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Image of Sgr A* from EHT collaboration
Event Horizon Telescope collaboration: https://ve42.co/EHT

Animations from The Relativistic Astrophysics group, Institute for Theoretical Physics, Goethe-Universität Frankfurt. Massive thanks to Prof. Luciano Rezzolla, Dr Christian Fromm and Dr Alejandro Cruz-Osorio.

A huge thanks to Prof. Peter Tuthill and Dr Manisha Caleb for feedback on earlier versions of this video and helping explain VLBI.

Great video by Thatcher Chamberlin about VLBI here – https://youtu.be/Y8rAHTvpJbk

Animations and simulations with English text:
L. R. Weih & L. Rezzolla (Goethe University Frankfurt)
https://youtu.be/jvftAadCFRI

Video of stars going around Sgr A* from European Southern Observatory
https://www.eso.org/public/videos/eso1825e/

Video zooming into the center of our galaxy from European Southern Observatory
https://www.youtube.com/watch?v=dXAU0gzsPOw

Video of observation of M87 courtesy of:
C. M. Fromm, Y. Mizuno & L. Rezzolla (Goethe University Frankfurt)
https://youtu.be/meOKmzhTcIY

Video of observation of SgrA* courtesy of
C. M. Fromm, Y. Mizuno & L. Rezzolla (Goethe University Frankfurt)
Z. Younsi (University College London)
https://youtu.be/VnsZj9RvhFU

Video of telescopes in the array 2017:
C. M. Fromm & L. Rezzolla (Goethe University Frankfurt)
https://youtu.be/Ame7fzBuFnk

Animations and simulations (no text):
L. R. Weih & L. Rezzolla (Goethe University Frankfurt)
https://youtu.be/XmvpKFSvB7A


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Special thanks to Patreon supporters: Inconcision, Kelly Snook, TTST, Ross McCawley, Balkrishna Heroor, Chris LaClair, Avi Yashchin, John H. Austin, Jr., OnlineBookClub.org, Dmitry Kuzmichev, Matthew Gonzalez, Eric Sexton, john kiehl, Anton Ragin, Diffbot, Micah Mangione, MJP, Gnare, Dave Kircher, Burt Humburg, Blake Byers, Dumky, Evgeny Skvortsov, Meekay, Bill Linder, Paul Peijzel, Josh Hibschman, Mac Malkawi, Michael Schneider, jim buckmaster, Juan Benet, Ruslan Khroma, Robert Blum, Richard Sundvall, Lee Redden, Vincent, Stephen Wilcox, Marinus Kuivenhoven, Clayton Greenwell, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi, Ron Neal

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Written by Derek Muller
Animation by Ivy Tello, Mike Radjabov, Maria Raykova
Filmed by Petr Lebedev

Dr. Charles Finch Presents “The Dogons of Egypt"
01:08:41
KwabenaOforiOsei
6 Views · 25 days ago

The Dongon people of Egyt
#TheNewBlackMind
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Home industry - Forging a iron digging fork jembe
13:16
Karuga Mwangi
14 Views · 2 months ago

⁣Home industry -Forging a digging fork jembe

Engineering and the Future of Africa by Prof Arthur Mutambara PART 1
01:24:50
Omubo Duabo
21 Views · 4 months ago

Professor Arthur G.O. Mutambara (Former Deputy Prime Minister of Zimbabwe) speaks on decolonisation and the future of Africa.

The presentation addressed the following four imperatives:

1) The role of the Engineer beyond Engineering
2) The Engineer and Continental Integration
3) Decolonisation of the Engineering Curriculum
4) The Engineer and the Fourth Industrial Revolution, in Pursuit of African Economic Prosperity

Neil deGrasse Tyson: Living In Higher Dimension?
00:31:27
Ambakisye-Okang Dukuzumurenyi
7 Views · 9 months ago

Neil deGrasse Tyson during the presentation of his latest book “Astrophysics for the rest of us”, answers questions about events that cannot be explained by our traditional senses. The book is a must read for an easy introduction to astrophysics. We focused, instead, on how it would be possible for humans to live in a higher dimension. June 2017.

Graphics and editing: DW360
Video credit: https://www.92y.org/
Thank you also to Neil deGrasse Tyson for mentioning this video in one of his tweets.
See https://twitter.com/neiltyson/....status/1057986909274

Does Math Reveal Reality?
01:36:03
Ambakisye-Okang Dukuzumurenyi
7 Views · 9 months ago

Mathematics has an uncanny ability to describe the physical world. It elegantly explains and predicts features of space, time, matter, energy, and gravity. But is this magnificent scientific articulation an invention of the human mind or is mathematics indelibly imprinted upon the substrate of reality? #BrianGreene and leading thinkers parse the thorny problems of math’s existence.

This program is part of the Big Ideas series, supported by the John Templeton Foundation.

Participants:
David Z. Albert
Sheldon Goldstein
Silvia Jonas
Max Tegmark

Moderator:
Brian Greene

- SHARE YOUR THOUGHTS on “Does Math Reveal Reality?” through this short survey: https://survey.alchemer.com/s3/6429159/WSF

WSF Landing Page Link: https://www.worldsciencefestiv....al.com/programs/does

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The Formation of the Solar System in 6 minutes! (4K "Ultra HD")
00:06:17
Ọbádélé Kambon
13 Views · 9 months ago

The story of how our Earth was formed 4.5 billion years ago, told from the perspective of an asteroid called Bennu (which has survived until now). NASA sent a satellite to study Bennu to help us learn more about the beginning of our solar system.

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This video is courtesy of NASA:
http://www.nasa.gov/multimedia..../videogallery/index.
Earth intro:
https://www.youtube.com/watch?v=Ybh11kcDhfM




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