https://www.sciencealert.com/we-know-what-dark-matter-isn-t-it-s-not-tiny-black-holes-a-new-test-has-confirmed

Astronomers Just Ruled Out Hawking's Theory on The Primordial Nature of Dark Matter

 

MICHELLE STARR

4 APR 2019

We still don't know what dark matter is, but we can strike a line through one option. It is not, as per a theory proposed by the brilliant Stephen Hawking, a bunch of teeny-tiny microscopic black holes.

In the most rigorous test of the theory to date, an international team led by researchers from the Kavli Institute for the Physics and Mathematics of the Universe (IPMU) in Japan has searched for the telltale sign of such minuscule black holes, and the result was pretty damning.

The scientists were hunting for a particular flicker of stars in a nearby galaxy - the way the light would appear to us if a black hole less than a tenth of a millimetre were passing in front of it.

A black hole of that size may seem ludicrous, but the concept actually stems from an elegant theory by Hawking, who was trying to tackle our massive dark matter problem.

 

more at link......

Edited April 5, 20196 yr by Strange
Title

Interesting story.

(just a peeve about the thread title: "hypothetical" is an adjective, the noun is "hypothesis" so "Hawking's hypothesis"  )

12 minutes ago, Strange said:

Interesting story.

(just a peeve about the thread title: "hypothetical" is an adjective, the noun is "hypothesis" so "Hawking's hypothesis"  )

Okydoki!! 

...there is Friday night after all...

If somebody is "language purist" and is "moderator" he/she can fix language mistakes of other people, by himself/herself, without any additional info..

 

...if I see trash on the street, I am not starting screaming "I see trash here!!".. just taking it and throwing to the trashcan..

 

But you might tell the person who dropped it that they shouldn’t do that in future!

(And I don’t think I can edit titles on my phone...)

Edit: yes I can!