14 ms·
Logarithmic Maps of the Universe (2005)
- privong 6y agoNeat map. The page's link to the journal article is broken. The abstract can be viewed on NASA's ADS[0] or directly via the DOI link[1] (which connects to the current home of the Astrophysical Journal). [0] https://ui.adsabs.harvard.edu/abs/2005ApJ...624..463G/abstract https://ui.adsabs.harvard.edu/abs/2005ApJ...624..463G/abstra... [1] https://ui.adsabs.harvard.edu/link_gateway/2005ApJ...624..463G/doi:10.1086/428890 https://ui.adsabs.harvard.edu/link_gateway/2005ApJ...624..46...
- teraflop 6y agoAnd here's the corrected arXiv link: https://arxiv.org/abs/astro-ph/0310571 https://arxiv.org/abs/astro-ph/0310571
- xingyzt 6y agoSee also https://xkcd.com/482 https://xkcd.com/482 (2008)
- p1mrx 6y agoI would like to see a map of the universe scaled by population, similar to http://www-personal.umich.edu/~mejn/election/2016/ http://www-personal.umich.edu/~mejn/election/2016/
- Mayzie 6y agoOpening that link, I just get presented with a login page.
- p1mrx 6y agoYour browser is probably redirecting to the broken HTTPS version. https://www.businessinsider.com/2016-election-results-maps-population-adjusted-cartogram-2016-11 https://www.businessinsider.com/2016-election-results-maps-p... has the same maps.
- mcphage 6y agoI’d love to see a logarithmic map of the world, too.
- teraflop 6y agoHere you go: https://mrgris.com/projects/merc-extreme/#a473b325@ https://mrgris.com/projects/merc-extreme/#a473b325@
- nickt 6y agoThank you. That is a very strange way to look at the Earth.
- cozzyd 6y agothis is amazing!
- xingyzt 6y agoWow. That feels like living in an O'Neill cylinder.
- magikaram 6y agoChallenge: find your home logarithmically.
- mcphage 6y agoThank you!!! I've been looking for something like this for a while, I'm so glad to see someone actually did it!
- Aerroon 6y agoIf anyone looked for Andromeda and couldn't find it: M31 is Andromeda and it's around 765 kiloparsecs away.
- folli 6y agoCan someone ELI15 the horizontal axis to me (24h..6h)?
- ajross 6y agoThe "longitude" of astronomy is called "right ascension" and is traditionally counted as a 24 hour circle: https://en.wikipedia.org/wiki/Right_ascension https://en.wikipedia.org/wiki/Right_ascension
- divbzero 6y agoThe lower bound on this map’s logarithmic scale is ~1000 km. I’d love to see it extended down to the Planck length.
- nlitsme 6y agoYeah, and then the origin should be moved to somewhere on the surface of the earth, instead of it's core.
- enriquto 6y agowhat do you mean? There's no "origin" on a logarithmic map, it's infinite both ways
- crubier 6y agoThe map is relative to one location. You don’t want to see « rocks » and « rocks » for any distance smaller than 6000km, you want to see everyday objects. So you want the origin to be on earth surface
- 082349872349872 6y agocompare (1957) https://ned.ipac.caltech.edu/level5/Boeke/frames.html https://ned.ipac.caltech.edu/level5/Boeke/frames.html "The Universe in 40 jumps" 10e-13 cm to 10e26 cm
- twic 6y agoI got one of these printed by a banner-printing service who could do prints two metres tall and 60 cm wide or something. It came back with the bottom third blank - there are so many objects in the postscript file, it crashed their rasteriser. This was a cheap service, so they didn't check it before printing it out. I rasterised it in software, and sent them the image, and that was fine.
- phreeza 6y agoI wonder how the distances to the solar system objects were chosen? If it was the average distance from earth, shouldn't sun be closest? I guess it is maybe the shortest possible distance?
- astro123 6y agoI think it was taken at a particular time. If it were the closest, venus would be closer than the sun. Skimming the paper it looks like it was the positions in Aug 2003
- sideshowb 6y agoWhy is there a band of decelerating matter right near the top? I thought it was all accelerating outwards? Also what's the gap between the blue bits?
- terramex 6y agoThe gap is part of the universe we have trouble seeing because it is obscured by Milky Way.
- astro123 6y agoThe early universe's expansion was not accelerating, as the early universe was not dominated by dark energy. I don't know off the top of my head exactly when that changed, but z=0.76 seems about right. So I'm pretty sure that is what that is. The reason the dominant form of matter changes is fairly simple. As the universe expands, the amount of matter doesn't change, so the matter density goes as 1/r^3. The amount or radiation goes as 1/r^4 as there is an extra loss of energy due to redshifting (E = hc/wavelength). Dark energy though is (we think) a constant, so as the universe expands, the amount of it stays constant.
- sideshowb 6y agoThat took a long time to process! What's z? Your username checks out :-)
- user2994cb 6y agoHow about a 3d model of the universe, inverted, say, in the (model) earth's surface?
- lmilcin 6y agoIt is interesting to see that the biggest distance, in terms of orders of magnitude, is between Sol system and nearest stars.