Biggest void in space is 1B light years across (2007)
newscientist.com
Biggest void in space is 1B light years across (2007)
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Re: Biggest void in space is 1B light years across (2007)
#2Posted it because it reminds me of an hypothesis I once saw, that we might be able to detect alien civilizations based on blank spots in the sky where they've managed to divert all the energy from their environment.
Re: Biggest void in space is 1B light years across (2007)
#3Posted it because it reminds me of an hypothesis I once saw, that we might be able to detect alien civilizations based on blank spots in the sky where they've managed to divert all the energy from their environment.
I'm reminded of the Three Body Problem series, where there's this concept of a Black Domain - an area of space in which the speed of light has been reduced drastically. Some civilizations in the setting have reason to deliberately construct these areas of space. (The reasoning behind this might be considered a spoiler, so I'll leave it off.)
Re: Biggest void in space is 1B light years across (2007)
#4Posted it because it reminds me of an hypothesis I once saw, that we might be able to detect alien civilizations based on blank spots in the sky where they've managed to divert all the energy from their environment.
I'm reminded of the Three Body Problem series, where there's this concept of a Black Domain - an area of space in which the speed of light has been reduced drastically. Some civilizations in the setting have reason to deliberately construct these areas of space. (The reasoning behind this might be considered a spoiler, so I'll leave it off.)
You mean like in Vernor Vinge's 1992 A Fire Upon the Deep?
Re: Biggest void in space is 1B light years across (2007)
#5Posted it because it reminds me of an hypothesis I once saw, that we might be able to detect alien civilizations based on blank spots in the sky where they've managed to divert all the energy from their environment.
It might not be as empty as it looks. Maybe it’s just got a really big dark sheet over it. Astronomers don’t consider the possibility of ginormous dark sheets in space.
Re: Biggest void in space is 1B light years across (2007)
#6Voids aren’t empty they just have less stuff in them.
There’s galaxies and things in there.
Re: Biggest void in space is 1B light years across (2007)
#7Posted it because it reminds me of an hypothesis I once saw, that we might be able to detect alien civilizations based on blank spots in the sky where they've managed to divert all the energy from their environment.
Probably more in the domain of god - if you believe in that sort of thing - than aliens.
Re: Biggest void in space is 1B light years across (2007)
#8Voids aren’t empty they just have less stuff in them. There’s galaxies and things in there.
Sometimes I wonder about the percentage of HN commenters who actually read the article. Literally a few paragraphs in:
“The lack of radio sources means that there are no galaxies or clusters in that volume.”
Re: Biggest void in space is 1B light years across (2007)
#9Voids aren’t empty they just have less stuff in them. There’s galaxies and things in there.
Sometimes I wonder about the percentage of HN commenters who actually read the article. Literally a few paragraphs in: “The lack of radio sources means that there are no galaxies or clusters in that volume.”
This morning, on an article about 'fuck-you money' there was a discussion about where the term comes from. The 1990s? The 2000s? The first paragraph of the article dated it back to at least the 1920s.
Re: Biggest void in space is 1B light years across (2007)
#10Earlier quoted context omitted.
I'm reminded of the Three Body Problem series, where there's this concept of a Black Domain - an area of space in which the speed of light has been reduced drastically. Some civilizations in the setting have reason to deliberately construct these areas of space. (The reasoning behind this might be considered a spoiler, so I'll leave it off.)
You mean like in Vernor Vinge's 1992 A Fire Upon the Deep ?
Sounds similar (I still need to read Liu), but in Vinge, it wasn't light speed being reduced, it was a variety of limitations on superluminal physics, computation/intelligence, and maybe even physical properties. (variations in quantum physics, perhaps)