A Black Hole - Cygnus X-1

[Morbosusful]

relaxing voice and... Fantastic video!

[rollercoasterdude96]

Rush brought me here, and I found this very interesting!

[DivineO2]

Black holes don't move, there a rip in space just like a wormhole.

[Psychickephera]

Thank you for this! How cool is that, to be able to use a telescope from our computers and see these stars and constellations!

[lithinm1998]

the more info on black hole was told by stephen hawking

[123serioussam]

spiral out.

[scottohscott]

This is very helpful. I always wondered where to point my scope to know I'm looking in the direction of a black hole. Thanks Scienceonline, but what about a neutron star???????????????????

[Globe85]

When I have watched the stars I have always found Deneb->Sadr->DEL Cyg triangle kinda nice.. Dunno why, and the two stars between Deneb and DEL Cyg :)

[aceNumeroAJ1]

I thought that it was very interesting that it was being followed by a damn black hole.

[maasai123456789]

would it be possible with a large exposure to make a pic of the wobble of the compagnion-star?

[BYMYSYD]

i like this video. You do a good job at teaching astronomy.

[slanigiro1]

5:40

[BjorkBjorn]

So it is theorized that a black hole is causing Cygnus X-1 to wobble... what if it's something else? A giant planet? An x-ray star? The business end of a wormhole? A super-dense hiccup in the cosmos? The mind of God?

Excellent video!

Don't take any theory as fact - a theory only explains observed phenomena and is valid only until disproven by a new theory that explains the phenomena and the original theory.

Big Bang Burp?

[heven729]

Actually, a hypothesis explains observed phenomena. It is only after much testing and experimentation that a hypothesis eventually turns into a theory, which is as close as we can get to an actual fact.

The thing is that most people use the word "theory" to explain their own personal thoughts, but in actuality its just conjecture.

[increality]

@ BjorkBjorn: I think (imo), what is more important is how much confidence one has in a theory.  and/or...How much would one be willing to bet? How much would you be willing to bet that the sun will rise tomorrow? A dollar? 100 bucks? Your life? It is not about perfect truth, it's about doing the best we can with what information we have and building confidence.

[BjorkBjorn]

Agreed... I am awed at the abundance of mystery withing the universe and our small understanding of it all.

[AndSingForeverToYou]

@BjorkBjorn they can probably deduce that it's a black hole due to its attributes. Those other things you mentioned probably leave a different imprint than a black hole, so I think astronomers would probably know what it isn't.

[Nanaeon05]

thank you :-) great video i finaly understand astronomy just about !

[NewZealandParkour]

"the swan" is the southern cross its on my countries flag never heard it called the swan before. also i must say that we cant see what is altering cygnus-x1s orbit so claiming that it is a blackhole (something we know only in theory) must still be looked at scepticaly have an open mind in science and remember unless you have all the imformation on something you could be wrong and even if you do have all the info you could still be wrong

[Shazaaming]

I think cygnus is different than the southern cross. The southern cross's constellation name is called the Crux. Cygnus can be seen in the northern hemisphere. It is best seen during the summer. But we can't see crux from the northern hemisphere.

[exilejedi7]

sweet

[wtfisditvoorbullshit]

We can all operate a powerfull telescope online?????? WHatttt that is awesome!

I've never heard of that, I'm gonna try that out!

Thanks for the vid, you give a lot of information, I subscribed.

[SkunkHunt]

"...not only has nobody ever found an event horizon; there is no laboratory evidence that such things exist. All reports of black holes being found are just wishful thinking - patently false ? unless you can provide the coordinates of a verified infinitely dense point-mass singularity and a verified event horizon. But there are of course, as you know, no such coordinates, because no black holes have ever been found." ~ Stephen Crothers

[MylesRodgers]

Nobody knows that.

[krcrange]

awsome videos

[cybernetixstyle]

very informative video. tnx for the post

[xazuross]

I heard that black holes are a way of time traveling, wonder if it's true.

[vissvienna]

Great video. Thanks for this. I use Starry NIght aswell!

[latnemalle]

Very informative. I <3 learning about space.

[Phyrexious]

5/5 for pure awesomeness.

[lejink]

amazing video as always, thanks for the post!!!

[MonsterLopes]

So glad that David Dunlap observatory didn't get sold.

[xmate3]

nice