Donate to Remove ads

Got a credit Card? use our Credit Card & Finance Calculators

Thanks to MyNameIsUrl,GSVsowhat,johnstevens77,BusyBumbleBee,88V8, for Donating to support the site

Holy Cow!

Scientific discovery and discussion
XFool
Lemon Quarter
Posts: 4053
Joined: November 8th, 2016, 7:21 pm
Been thanked: 241 times

Holy Cow!

#243586

Postby XFool » August 11th, 2019, 5:38 pm

The Dispute at the Heart of Cosmology

The Atlantic

The universe is expanding, but no one can agree on exactly how fast.

TheMotorcycleBoy
Lemon Quarter
Posts: 1990
Joined: March 7th, 2018, 8:14 pm
Has thanked: 1061 times
Been thanked: 150 times

Re: Holy Cow!

#243599

Postby TheMotorcycleBoy » August 11th, 2019, 6:21 pm

I think we've known (i.e. made some measurements which suggest this) about the expansion for some time.

The thing that I'm fundamentally at odds with in the Cosmology Conundrum, though, is Dark Matter. It feels like it must be a fudge factor of sorts. Hence it will be abandoned at some point in time. Just as the pre-relativistic thought ether was when Einstein came along.

Matt

stewamax
Lemon Slice
Posts: 931
Joined: November 7th, 2016, 2:40 pm
Has thanked: 10 times
Been thanked: 174 times

Re: Holy Cow!

#244023

Postby stewamax » August 13th, 2019, 4:10 pm

The original article by the excellent Natalie Wolchover was in Quanta - see https://www.quantamagazine.org/cosmolog ... -20190808/.
Quanta can be viewed free and is not funded by advertising but is backed by the Simons Foundation.

Usual disclaimers.
And highly recommended.

Slarti
Lemon Quarter
Posts: 2902
Joined: November 4th, 2016, 3:46 pm
Has thanked: 630 times
Been thanked: 487 times

Re: Holy Cow!

#245073

Postby Slarti » August 17th, 2019, 5:45 pm

TheMotorcycleBoy wrote:I think we've known (i.e. made some measurements which suggest this) about the expansion for some time.

The thing that I'm fundamentally at odds with in the Cosmology Conundrum, though, is Dark Matter. It feels like it must be a fudge factor of sorts. Hence it will be abandoned at some point in time. Just as the pre-relativistic thought ether was when Einstein came along.

Matt


We watched the Sky at Night Guide to Galaxies https://www.bbc.co.uk/iplayer/episode/b ... 2-galaxies and in that that Chris Lintott said that there is something that we don't know what it is that produces more gravity than we can account for and, until we know what it is, it is referred to as Dark Matter.

Similar for Dark Energy that is causing accelerating inflation.

Slarti

scrumpyjack
Lemon Slice
Posts: 560
Joined: November 4th, 2016, 10:15 am
Has thanked: 20 times
Been thanked: 153 times

Re: Holy Cow!

#245075

Postby scrumpyjack » August 17th, 2019, 6:05 pm

But it might be gravity from all the other universes that are out there. There is no reason to suppose there is only one universe?
:D

Imbiber
Lemon Pip
Posts: 96
Joined: November 5th, 2016, 6:02 am
Has thanked: 6 times
Been thanked: 23 times

Re: Holy Cow!

#245089

Postby Imbiber » August 17th, 2019, 6:46 pm

scrumpyjack wrote:But it might be gravity from all the other universes that are out there. There is no reason to suppose there is only one universe?
:D



Mmmm.... Never thought of that, interesting

Slarti
Lemon Quarter
Posts: 2902
Joined: November 4th, 2016, 3:46 pm
Has thanked: 630 times
Been thanked: 487 times

Re: Holy Cow!

#245191

Postby Slarti » August 18th, 2019, 11:21 am

scrumpyjack wrote:But it might be gravity from all the other universes that are out there. There is no reason to suppose there is only one universe?
:D


It does seem that the more that "we" can see, the more that there is to see.

Slarti

stewamax
Lemon Slice
Posts: 931
Joined: November 7th, 2016, 2:40 pm
Has thanked: 10 times
Been thanked: 174 times

Re: Holy Cow!

#245386

Postby stewamax » August 19th, 2019, 9:37 am

Slarti wrote:It does seem that the more that "we" can see, the more that there is to see.

Indeed. And perhaps what is extant is so arcane that "we" are not able to understand it.
Vide JBS Haldane's famous quote: My own suspicion is that the universe is not only queerer than we suppose, but queerer than we can suppose.

XFool
Lemon Quarter
Posts: 4053
Joined: November 8th, 2016, 7:21 pm
Been thanked: 241 times

Re: Holy Cow!

#245850

Postby XFool » August 20th, 2019, 8:55 pm

Slarti wrote:It does seem that the more that "we" can see, the more that there is to see.

I had that exact same experience this afternoon; while I was out 'litter picking' in a local park.


Return to “Science”

Who is online

Users browsing this forum: No registered users and 1 guest