Black Hole

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JohnN
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Black Hole

Postby JohnN » Sat Apr 13, 2019 3:48 pm

I guess we've all been gasping at the photo of the black hole, 55million light years away. But what I want to know is how do we know that it's still there? It could have ceased to exist 54 million years ago!
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Diane
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Re: Black Hole

Postby Diane » Sat Apr 13, 2019 4:07 pm

Good question. And if it's not there, where has it gone to. And what's on the other side?? (my head hurts just trying to imagine).
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Primrose
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Re: Black Hole

Postby Primrose » Sat Apr 13, 2019 4:33 pm

I think it's difficult to get our heads round some of these issues. I always wonder how the scientists ever manage to understand enough about it to be able to lecture on it. I smiled are John's comment that it could have ceased to exist many years ago. As I imagine, could many of the stars we currently see which are thousands of light years away.
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alan refail
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Re: Black Hole

Postby alan refail » Sat Apr 13, 2019 5:51 pm

trump.jpg
trump.jpg (63.67 KiB) Viewed 1424 times
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Cred air o bob deg a glywi, a thi a gei rywfaint bach o wir (hen ddihareb Gymraeg)
Believe one tenth of what you hear, and you will get some little truth (old Welsh proverb)
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oldherbaceous
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Re: Black Hole

Postby oldherbaceous » Sat Apr 13, 2019 6:44 pm

I suppose we shouldn't laugh....what the heck... :lol: :lol:
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Geoff
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Re: Black Hole

Postby Geoff » Sat Apr 13, 2019 6:55 pm

And another

FB_IMG_1555008319894.jpg
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Shallot Man
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Re: Black Hole

Postby Shallot Man » Sat Apr 13, 2019 8:07 pm

Diane wrote:Good question. And if it's not there, where has it gone to. And what's on the other side?? (my head hurts just trying to imagine).


More to the point. If it is a hole. How do you know it is there. :? :?
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Westi
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Re: Black Hole

Postby Westi » Sat Apr 13, 2019 8:09 pm

Shame Steven Hawkins didn't live long enough to see his ginormous mathematical equations proved to be absolutely right. he may even have been able to answer John's question.
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robo
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Re: Black Hole

Postby robo » Sat Apr 13, 2019 8:28 pm

There is only one thing we can be certain of ,it can't be half a hole
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