Black Holes and Galaxies: Professor Reinhard Genzel at ANU, July 2009

[danielmbcutler]

the fact that churches can con people out of their money and get tax exempt status makes me sick knowing that these people can barely get enough money to teach the human race truth

[Mauromoustakos]

That is a great lecture. For the first time, I can have now a general picture of the universe.

I should probably offer myself the chance to study a book on relativity and quantum physics.

-.

[gumme1234]

I like how he calls galaxies milky ways.

[KreatorRage]

Let me guess, another german astronomer am I right? It's weird how our country's educational system went down the drain so fast, I had to be away from school for 5 years to finally realize how much potential I have.

[rykana]

I don't feel my left ear

[anakmudajaman]

after i watched this video Evidence has been accumulating for several decades that many galaxies harbor central mass concentrations, my insight is very open because the video is very good to give information

[bundawartini]

Your Video Evidence has been accumulating for several decades that many galaxies harbor central mass concentrations that may be in the form of black holes with masses between a few million to a few billion time the mass of the Sun. Is Very Useful Sharing

[studas2011]

Both top comments have basic errors. Surprising, given the nature of the vid.

[unfinished8kt]

what an adorable professor. sadly, i'm going to a community college so i don't get to learn about black holes there :(

[oldi184]

Why Im receiving only one audio channel? Mono.

[2012DarkKnight]

Relatively speaking, the substance in a drain hole seems to have a mass area and rotation without motion of the hole.The Aether of space and dark matter fall into a hole of transformation, of a dimensional proportion. Our universe is a blastocyst of Gods body that transforms life and substance into energy and thought. As humans we are the seeds of life planted in Africa and grown through meiosis in the womb of our humanity, evolving through the effects of our causes transforming

E into MC2

[1991784512]

i'm just a 14 year old boy and all i wana know is .... are black holes dangerous?why?

[jetlagsyndrome]

@1991784512

Yes, they're dangerous!

They're the cause of diseases, cancers, poverty, wild animals, pedophiles,

low grades, exhaustion, dihydrogen monoxide, train accidents, cheesy movies,

ninja clowns, hurricanes, did say i mention 'cancer'?, sunburns, car accidents,

unplanned teen pregnancy, acne, politicians, and the war on terror. Be afraid.

[2Durr]

THERE IS WHERE bush is going to live in the blackholeee

[CACBCCCU]

Physicists are so sophisticated I'm sure most would look at me funny if I said that any self-respecting theory of quantum gravity would base all gravitational effects entirely on gravitational field quanta. Even funnier, I suppose photons are continuously re-aimed by interaction with gravitons, maybe because I like my gravitons very weak, pointlike (very long though), densely-packed and in very continuous supply at all times, while I prefer seeing photons as stronger shorter less-focused points.

[lmos26]

Excellent lecture, I really enjoyed it and thx for sharing :) "in support of open/free teaching knowledge"

[Pepsifx357]

I have an obvious question. If it takes light 25,000 years to reach the center of the galaxy, and he states that the camera's x-rays "penetrate" through the mass dust that blocks our view, in order to take a picture...Then, how long does it take to get a picture? Is the "black hole" simply sending out x-rays and the camera is just picking that up, or is the camera actually sending out x-rays that penetrate the clouds?

[joepovse]

@Pepsifx357 Light must come to us first, so... how fast radiation travels?

[badtrunk456]

@joepovse radiation is part of the light spectrum, so 286,000 miles per second.

[BrendanBTC]

@badtrunk456 That's 186,000

[brownj2]

@Pepsifx357 x-rays are a very energetic version of the same sort of radiation that makes up light. Astronomers use things like the Chandra space telescope to to just pick them up. Like photographing the light from a star, only the photons are moving with much higher energy. They move at the same speed as visible light , but they are just more energetic, these energetic photons vibrate faster, so they are higher frequency than visible light.

[stepharnos]

@55painterman right, so you're saying that we are just thoughts within a being that is a thought within a being etc. You are concluding that there is an finite series, but because of physical laws it can only be finite which suggests a beginning, it is not possible for the universe to be a part of any such infinite series, this was proved impossible 90 years ago

[powerfulwords]

Amazing science. Excellent talk.

[55painterman]

its very simple'' we are living in someones brain and we as the life are just thoughts and yes time is very different the bigger something is the slower times go by' if your brain was the size of this universe a 2 minute thought would seem to the point of the thought as 12 to 15 billion yrs, when in fact its just a 2 minute thought we are thoughts of some living creature that is trillions of eon,s ahead of us and it has come to be a thought in itself....how do I know? search me!!

[hackajim]

they say when you get close to a black hole, time slows down exponentially. theoretical "white holes" where in an "instant" all the stuff that went into a black hole spew out.... causing for us "the one and only big bang" but inside every black hole, is a white hole on the other end, spewing out material in a way that we only saw happen ONE TIME. there can be only one big bang for every universe, ... but from the black holes are created baby big bangs.

[SkunkHunt]

This is not proof of black holes, just speculation. Where is the actual evidence?

[VanDammesCokeDealer]

@SkunkHunt Did you watch the whole video? He very clearly presented the evidence.

[tristbjorn]

@SkunkHunt Black hole are a them selves not observed. They were a theoretical by product of the laws of gravity. But if you bothered listening, then he actually told you where the evidence were found. Quasars can so far only be explained by the existence of black holes.

[mjusiqtube]

A must see!! If you are interested in Black Holes. Excellent presentation! Really informative and interesting overview of the basics of black holes - without speculations regarding M teori, wormholes, other dimensions, and so on. Science. Facts. Enjoyable! Professor Reinhard Genzel performance is way beyond Michio Kaku if you ask me - the latter a representative for "science made easy for the tv addicted audience" - entertainment but no actually learning. Thanx for this. Re3gards.

[Zurround100]

michio kaku is way more interesting than that guy and i dont like his heavy accent. God I wish carl segan was still alive I really loved listening to him.

[TruneZeta]

@Zurround100 What a horribly, irrelevant response.

[stumpyw68]

@Zurround100

To make an apple pie from scratch, you must first invent the universe.

[alianantfarm]

dissapointingly low number of views

[3ventHoriz0n]

interesting vid