What Is The Most Powerful Thing In The Universe?

That was the most comprehensive explanation of quasars I've heard to date. It must have taken your team a long time to gather this information and make it presentable. Thank you for explaining the phenomenon that got me interested in cosmology in the first place 10+ years ago.

This channel is what people in the 90s thought of when they imagined the grand potential of the internet ❤

Radiation exposure is one of my greatest fears. It’s mostly invisible and undetectable unless you have a Geiger counter… I read about the people who lived down wind of the Trinity Test in New Mexico in the early forties. The bomb was detonated at five in the morning and it jolted people out of their beds. Two sisters looked outside and saw what looked like snow falling. They put on their bathing suits and went out to play in the radioactive fallout that they didn’t know was deadly. They rolled around in it and smeared it on their faces and bodies. Their community was only 35 miles away from the test site, and they weren’t warned or notified about the possibility of deadly exposure to radiation. Most people who were unknowingly exposed to the fallout were stricken with multiple cancers and autoimmune disorders in a disproportionate amount. The government finally admitted to their negligence and mistakes and awarded compensation to the victims of the devastating effects of radiation exposure that they caused during the Manhattan Project.

I wonder how many young lives you shifted to astronomy as their passion and profession. Must be a huge number.

One of the best channels on Youtube.

Absolutely love all of your channels. Unreal that this is free. Thank you truly.

What I love about this channel is that I could sit through a whole video and not get lost half way through. The pacing and editing work so well helping retain information. I sometimes watch, better-yet, listen to these during naps and in my dreams I visualize everything almost similarly to the CGI segments in the videos. Kudos to Leila and David!

Paul M Sutter wrote this episode!? Holy shit, no wonder it was so excellent, I mean they’re all amazing but I’m glad you credited the writer on this one. Paul is one of the best Physics/Black Hole YouTube personalities but I hadn’t heard from him in a while.

Literally had an audible gasp when I opened youtube and saw that you uploaded. I was literally planning on putting on your previous video for sleep! This is amazing.

I can't believe that I forgot about this dropping. This will help ne get ready for the week ahead. Thanks to everyone involved. I can not believe that making such good documentaries for free.

I love how this channel doesnt just teach you about cool space stuff, they tell you the story of how we found out each step ❤

love love love! just one request: is it possible to write in the corner of your videos, the equivalent of light years you mention, in parsecs and when appropriate in redshift z? As someone who has studied physics and astrophysics since a young age, parsec and z are more intuitive for me to imagine!

Best explanation of this phenomenon I've encountered online. The idea of quasars acting as galactic regulators of star formation activity is a fascinating one. There is much to consider. Top notch quality as always, History of the Universe team.. Profoundly edifying, engaging and very well written. Well done !

Thank you History of the Universe team for all those videos! Fantastic quality as always :)

Another masterpiece of subject choice, storytelling, and teaching. Thank you so much.

I'll heartily echo this sentiments of others. Wonderfully written, clearly narrated, and spectacularly graphically illustrated. Congratulations to your talented crew. I've always wondered how those impossibly energetic relativistic jets could possibly be created. This is the best explanation I've come across - and yet, I still find their existence completely mind boggling.

Studying and trying to envision the cosmos and all its wonders and information... takes my mind off of all the craziness, we humans deal with here on a daily basis. Thank you "Creator of all creation" for creating. Namaste. From a Vietnam Era Marine Corps veteran.

HOTU is the embodiment of the best kind of education: information seasoned with an awe-inspiring narrative.

This was without a doubt the best video explanation of quasars I have ever seen

This is an impressive description of these theories without getting lost in the details.