Pages

Jump to bottom

7 comments

1 sundude  Thu, Oct 24, 2013 8:11:57am

Ok, confess my ignorance. If the universe is about 13.8 billion years old, how can any two bits of it be more than about 27.6 billion light years apart? Did they travel at warp factor 7 for a time, or is this some of that new math I’ve been hearing about, or what?

2 Skip Intro  Thu, Oct 24, 2013 8:56:19am

re: #1 sundude

(its distance from Earth of 30 billion light-years is because the Universe is expanding).

3 jvic  Thu, Oct 24, 2013 9:36:11am

1. re: #1 sundude

According to the linked article, the “galaxy is about 30 billion light-years away”. If it was 13 billion light years away from us and receding at virtually the speed of light when it emitted the light that just reached us, today that would put it about 26 billion light years away: pretty close to 30 billion.

I’m not expert and will defer to one, but my guess is that that’s the gist.

2. The foregoing does not really answer your question about the extent of the universe. If I correctly interpret this page at Cornell’s Astronomy Department, that 30 billion light years is the maximum distance from about which we can receive information about the universe (given the age of the universe & given that information cannot travel faster than the speed of light). In other words, the 30 billion l.y. is the extent of the detectable universe.

That page has more links that are relevant to your question.

3. I repeat that I’m not an expert.

4 Political Atheist  Thu, Oct 24, 2013 9:38:18am

All that time…. Gotta wonder what those galaxies or stars look like now. Someone sitting there looking at the light from our Milky Way?

5 aagcobb  Thu, Oct 24, 2013 11:46:59am

re: #1 sundude

Ok, confess my ignorance. If the universe is about 13.8 billion years old, how can any two bits of it be more than about 27.6 billion light years apart? Did they travel at warp factor 7 for a time, or is this some of that new math I’ve been hearing about, or what?

This may certainly be wrong, but during inflation in the earliest moments of the Big Bang, the universe expanded faster than the speed of light.

6 CriticalDragon1177  Thu, Oct 24, 2013 6:34:42pm

Randall Gross,

I just heard about this. Its an amazing find. I probably would have created a new page on it here myself, if you hadn’t already.

7 wheat-dogghazi  Thu, Oct 24, 2013 9:14:56pm

re: #5 aagcobb

No can do. Very quickly, yes, but not FTL.

As a very crude analogy, imagine the universe is an infinitely stretchable rubber sheet, which has been getting ever bigger since the Big Bang. You’re standing at one point, the galaxy in question at another. 13 billion years ago, the point you are at and the galaxy were much closer together than they are now. Now, the galaxy is 30BLY away, but it’s still only 13B years old.


This page has been archived.
Comments are closed.

Jump to top

Create a PageThis is the LGF Pages posting bookmarklet. To use it, drag this button to your browser's bookmark bar, and title it 'LGF Pages' (or whatever you like). Then browse to a site you want to post, select some text on the page to use for a quote, click the bookmarklet, and the Pages posting window will appear with the title, text, and any embedded video or audio files already filled in, ready to go.
Or... you can just click this button to open the Pages posting window right away.
Last updated: 2016-01-01 10:29 am PST
LGF User's Guide RSS Feeds Tweet

Help support Little Green Footballs!

Subscribe now for ad-free access!Register and sign in to a free LGF account before subscribing, and your ad-free access will be automatically enabled.

Donate with
PayPal
Square Cash Shop at amazon
as an LGF Associate!
Recent PagesClick to refresh
Perfect Way to Die (Behind the Scenes) Behind the scenes footage from my ‘Perfect Way to Die’ video. This song is SO powerful and means so much in this time right now. While I am a mother, I could NEVER understand what it’s like to lose ...
Thanos
5 hours, 3 minutes ago
Views: 85 • Comments: 0 • Rating: 0
Tweets: 2 • Share to Facebook
A Hard Rain’s A-Gonna Fall — Bryan Ferry (Live 1977)
Thanos
1 day, 1 hour ago
Views: 221 • Comments: 0 • Rating: 0
Tweets: 1 • Share to Facebook
Barry McGuire - Eve of Destruction Subscribe to The Best Of for more classic music history, videos and playlists: bit.ly "Eve of Destruction" is a protest song written by P. F. Sloan. Barry McGuire recorded the track in July 1965. It was released by Dunhill ...
Thanos
1 day, 1 hour ago
Views: 220 • Comments: 0 • Rating: 0
Tweets: 2 • Share to Facebook
#Thegreatpoolpondconversion - 200705It was a good, non exhausting day's work, even though it was 98 degrees when we started. The end of the first game in the series is in sight. We can see the finish line.So everything we do now is ...
Welcome to The Imbleachment (dangerman)
2 days ago
Views: 296 • Comments: 2 • Rating: 8
Tweets: 0 • Share to Facebook
The Good, the Bad and the Ugly - the Danish National Symphony Orchestra (Live) #TheMorriconeDuel #FilmMusicLive #DNSOWant to experience The Danish National Symphony Orchestra live? bit.ly The Good, the Bad and the Ugly Composed by Ennio MorriconeVarious flutes: Hans Ulrik, Russell ItaniVocals: Tuva Semmingsen & Christine Nonbo Andersen In January 2018, The Danish ...
Thanos
3 days, 2 hours ago
Views: 466 • Comments: 0 • Rating: 0
Tweets: 2 • Share to Facebook
Charlie Puth - Girlfriend [Official Audio] "Girlfriend" Out Now - charlieputh.lnk.to Text me:[no phone numbers allowed] Subscribe for more official content from Charlie Puth: charlieputh.lnk.to Follow Charliecharlieputh.com facebook.com@charlieputh instagram.comtiktok.comSoundCloud Lyrics: Yeah, tired of this conversationWe didn’t come all this wayTo touch a little, kiss a ...
Thanos
5 days, 21 hours ago
Views: 611 • Comments: 0 • Rating: 0
Tweets: 0 • Share to Facebook
Paul Weller - Village - Radio 2 BreakfastPaul Weller performs Village live from his Black Barn studio for the BBC Radio 2 Breakfast show
Thanos
6 days ago
Views: 696 • Comments: 0 • Rating: 1
Tweets: 3 • Share to Facebook
Crowded House - Fall at Your Feet (Live From Home, 2020) In the spirit of musical comradeship through isolation, us fellas in Crowded House have created a live version of Fall At Your Feet, captured here in the making at our respective home set ups. Some of the sentiment in ...
Thanos
6 days ago
Views: 697 • Comments: 0 • Rating: 0
Tweets: 1 • Share to Facebook
#Thegreatpoolpondconversion - 200628after the rototilling we tossed several bags of wild flower seeds. thousands and thousands. we'll see what happens with them. we also bought four trees for our anniversary.all natives, good for birds and butterflies. there's a slash pine, a beautyberry ...
Welcome to The Imbleachment (dangerman)
1 week ago
Views: 632 • Comments: 2 • Rating: 5
Tweets: 0 • Share to Facebook
Russian Bounties — Trump Threatens the American Experiment - PRESS RUN Not once has Trump angrily banged a lectern and promised to get to the bottom of the stunning and heartbreaking story that Russian intelligence was paying lucrative bounties for the lives of American troops murdered in Afghanistan. Not once ...
Thanos
1 week ago
Views: 790 • Comments: 0 • Rating: 1
Tweets: 1 • Share to Facebook