General This forum is for non-technical general discussion which can include both Linux and non-Linux topics. Have fun!
NOTE: All new threads will be moderated. Political threads will not be approved. |
Notices |
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
Are you new to LinuxQuestions.org? Visit the following links:
Site Howto |
Site FAQ |
Sitemap |
Register Now
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
|
 |
|
07-02-2025, 10:50 AM
|
#16
|
Member
Registered: Jun 2025
Posts: 131
Rep:
|
There's a nonzero chance I'll check out that book, astrogeek, thanks!
|
|
|
07-02-2025, 12:31 PM
|
#17
|
Moderator
Registered: Oct 2008
Distribution: Slackware [64]-X.{0|1|2|37|-current} ::12<=X<=15, FreeBSD_12{.0|.1}
Posts: 6,388
|
Quote:
Originally Posted by clueless_dolt
There's a nonzero chance I'll check out that book, astrogeek, thanks!
|
Excellent!
For those interested, another very accessible book on the subject that you may want to add to your reading list: The Music of the Big Bang, Amadeo Balbi, Springer 2007. It covers the topic with a tighter focus on the CMB itself, and the meaning of the anisotropy power spectrum, using music as an analogy - a very effective introduction. It was based mostly on the WMAP data and predates the Planck data, which it looks forward to with some excitement. As such it gives a glimpse of the "historical" development of our understanding from an important milepost. Well worth the reading!
|
|
|
07-02-2025, 02:43 PM
|
#18
|
LQ Guru
Registered: Jun 2003
Location: Virginia
Distribution: Slackware = Main OpSys
Posts: 5,169
Original Poster
|
Just one of the breakthrough features of the Vera Rubin telescope is it's combination of resolution and speed. Because of it's speed it effectively can make a sort of time-lapse animation of an incredibly wide and deep swatch of sky in just days. This is expected to produce an awareness of millions of actively changing features as opposed to a static snapshot every few days. There are a wide array of advantages to motion pictures anyone should be able to imagine from the mundane to the abstract.
This is responsible immediately for important issues like asteroid discovery, especially those that can threaten us, as literally the first line of defense. Everyone on Earth would be devastated by an asteroid impact the size of Mt. Everest like Chicxulub that killed off large dinosaurs and made way for mammals including us but even ones way less than 1/100th that size could wipe out massive areas of our planet and cause even wider ranging post impact effects. Until Vera Rubin telescope, obviously those smaller but still devastating ones were unknown. Now having this capability reminds me of Carl Sagan's remarks about prudent planetary hygiene.
Such immediately practical concerns are obviously improved but that is just the tip of the iceberg. With Rubin collecting PETABYTES of data, this will be studied "with a fine toothed comb" by thousands for decades no doubt substantially expanding Humanity's understanding of the Reality of the Universe of which we are a recent part.
|
|
|
07-12-2025, 05:53 AM
|
#19
|
Member
Registered: Jun 2025
Posts: 131
Rep:
|
Quote:
Originally Posted by astrogeek
Excellent!
For those interested, another very accessible book on the subject that you may want to add to your reading list: The Music of the Big Bang, Amadeo Balbi, Springer 2007. It covers the topic with a tighter focus on the CMB itself, and the meaning of the anisotropy power spectrum, using music as an analogy - a very effective introduction. It was based mostly on the WMAP data and predates the Planck data, which it looks forward to with some excitement. As such it gives a glimpse of the "historical" development of our understanding from an important milepost. Well worth the reading!
|
I ordered both and they should come in a week or so.
|
|
|
07-12-2025, 11:55 PM
|
#20
|
LQ Guru
Registered: Jun 2003
Location: Virginia
Distribution: Slackware = Main OpSys
Posts: 5,169
Original Poster
|
A number of browser apps are now available to the public such as Orbitviewer and Explorer-Skyviewer that can display and exhibit considerable interactivity regardless of platform - phone, tablets and laptops, ordinary PCs, high end PCs and at thge top of the list, high end gaming PCs. The reason gaming PCs are the highest resolution and have the most interactive zoom features is the combination of high end GPUs complemented by high resolution Monitors. One can choose from various types and switch up or down to reach the best experience, or all of them.
I don't yet know if these direct links will work for everyone but it could be a start
Orbitviewer - https://orbitviewer.app/en/
Skyviewer - https://skyviewer.app/explorer
Update: Well the links work for me. Anyone having difficulty please post here as I'm confidant quick assistance is at hand.
Last edited by enorbet; 07-12-2025 at 11:57 PM.
|
|
|
07-13-2025, 06:11 PM
|
#21
|
Moderator
Registered: Oct 2008
Distribution: Slackware [64]-X.{0|1|2|37|-current} ::12<=X<=15, FreeBSD_12{.0|.1}
Posts: 6,388
|
Quote:
Originally Posted by clueless_dolt
I ordered both and they should come in a week or so.
|
Glad to hear it! I trust you will be delighted, and enlightened, by both of them!
I think i'll pull my own down from the shelf and give them a refresher read through!
|
|
|
07-14-2025, 08:26 AM
|
#22
|
Member
Registered: Jun 2025
Posts: 131
Rep:
|
Quote:
Originally Posted by astrogeek
Glad to hear it! I trust you will be delighted, and enlightened, by both of them!
|
That would be ideal, downside of not liking reading books off screen is ...well, hard to pirate :P
But yeah, perhaps I will be enlightened, although in this case, being skeptical of dark matter...maybe I need to endarkened, hehe.
Anyway, arrival is in 10 days, I guess Bezos really does not appreciate me not going for Prime...
|
|
|
07-14-2025, 08:49 AM
|
#23
|
Senior Member
Registered: Feb 2007
Location: UK
Distribution: Debian
Posts: 4,054
|
If you don't like Amazon and/or Jeff Bezos, stop giving him money!
Quote:
Originally Posted by https://www.waterstones.com/book/the-little-book-of-cosmology/lyman-page/9780691195780
In stock Usually dispatched within 1-2 days
|
Quote:
Originally Posted by https://www.barnesandnoble.com/w/the-little-book-of-cosmology-lyman-page/1133448102
In stock. Ships in 1-2 days.
|
|
|
|
07-14-2025, 09:05 AM
|
#24
|
Member
Registered: Jun 2025
Posts: 131
Rep:
|
Quote:
Originally Posted by boughtonp
If you don't like Amazon and/or Jeff Bezos, stop giving him money!
|
I have no argument to counter that because I agree with you and I just do it cause amazon allows bank transfers, no pay pal or anything silly like that.
My gripe is a conspiracy theory of mine that involves amazon withholding shipping on purpose for those who don't bend the knee to prime.
Reason for that is that I live really close to a logistics backbone kinda thing, and usually get items really quickly from various outlets, then one day, it changed.
Specifically, when Amazon started using its own couriers... so yeah. I agree but I don't follow the credo and instead I just whinge.
|
|
|
07-14-2025, 09:31 AM
|
#25
|
Senior Member
Registered: Feb 2007
Location: UK
Distribution: Debian
Posts: 4,054
|
Quote:
Originally Posted by clueless_dolt
My gripe is a conspiracy theory of mine that involves amazon withholding shipping on purpose for those who don't bend the knee to prime.
|
Er, that's not a conspiracy theory, it's openly what they do.
(It's also far from their worst practices, but that would be taking this thread of topic.)
|
|
|
07-14-2025, 10:14 AM
|
#26
|
Moderator
Registered: Oct 2008
Distribution: Slackware [64]-X.{0|1|2|37|-current} ::12<=X<=15, FreeBSD_12{.0|.1}
Posts: 6,388
|
Quote:
Originally Posted by enorbet
I don't yet know if these direct links will work for everyone but it could be a start
Orbitviewer - https://orbitviewer.app/en/
Skyviewer - https://skyviewer.app/explorer
Update: Well the links work for me. Anyone having difficulty please post here as I'm confidant quick assistance is at hand.
|
Thanks.
The skyviewer is usable, but not fully functional on my bandwidth limited setup. Long load times when the view requires pulling in more sky, but surprisingly responsive after load. Some features unresponsive, I'll try to be more specific later.
The orbitviewer is not usable here, again due to bandwidth limits more than anything I suspect, but the animations are clunky and... too many, I never got to the end of the skip/next options.
|
|
|
07-14-2025, 10:25 AM
|
#27
|
Moderator
Registered: Oct 2008
Distribution: Slackware [64]-X.{0|1|2|37|-current} ::12<=X<=15, FreeBSD_12{.0|.1}
Posts: 6,388
|
Quote:
Originally Posted by clueless_dolt
That would be ideal, downside of not liking reading books off screen is ...well, hard to pirate :P
|
Yea, until you have touched the paper and turned the pages you haven't read it. And if it is worth reading it is worth sharing, now and into the future, and paper and ink are the only media that guarantee ability to do that.
Forum rules and respect for others here prohibit me from commenting on the bald... guy...
|
|
|
07-14-2025, 01:54 PM
|
#28
|
LQ Guru
Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Slarm64 & Android
Posts: 17,791
|
Quote:
Originally Posted by astrogeek
Thanks.
The skyviewer is usable, but not fully functional on my bandwidth limited setup. Long load times when the view requires pulling in more sky, but surprisingly responsive after load. Some features unresponsive, I'll try to be more specific later.
The orbitviewer is not usable here, again due to bandwidth limits more than anything I suspect, but the animations are clunky and... too many, I never got to the end of the skip/next options.
|
Interesting thread. Yes, nothing can clear enorbet of the 'grevious' crime of verbosity, but he's not the only one with that problem
The 'works here, doesn't work there' problem is down to routing. I once (and only once) subscribed to historyhit.com(?) or something like that, and couldn't watch anything. Routing checks found the signal was going out to the US (fast from here), through the US, through as restriction, and came crawling back through Ireland to the UK. Fortunately one of their servers had a more direct route and I could get 576p through that.
|
|
|
07-14-2025, 04:39 PM
|
#29
|
Member
Registered: Jun 2025
Posts: 131
Rep:
|
Quote:
Originally Posted by boughtonp
Er, that's not a conspiracy theory, it's openly what they do.
(It's also far from their worst practices, but that would be taking this thread of topic.)
|
Man... I never had the highest opinion of Amazon and its daddy but after scrolling for 30 seconds, looking at the sidebar and noticing that I was barely down three topics of the TOC made me laugh and close the tab.
Whewwwwwwwwwwwwwwwwwwwwwwwwwwwwww. Yeah. I wish I had easier alternatives... but again, it's an outlet that just lets me do bank transfer, no CC, no Paypal, no skrill, moneybookers or whatever.
CCs and PP ...my bane of online payment. What do we have banks for if we then need to use a superbank to bank bankings to other banking banks?
I really wish it weren't so.
|
|
|
07-14-2025, 08:10 PM
|
#30
|
LQ Guru
Registered: Jun 2003
Location: Virginia
Distribution: Slackware = Main OpSys
Posts: 5,169
Original Poster
|
I'd like to comment about Dark Matter and Dark Energy here since gathering data on those mysteries is one of the Vera Rubin telescope. There is nothing to be skeptical about since no conclusions yet exist. That's why their current labels include "Dark". FWIW Dark Energy is vastly less understood and much harder to gather reliable data on but Dark Matter expresses the awareness as simple and complete as humans first recognizing that our invisible atmosphere wasn't nothingness but something tangible. In that distant Past such things, invisible things that had presence were thought to be supernatural, literally Spirits. This was nearly universal when all humans had to analyze the world around us was our unaided 5 senses. That all began to change with the invention of optical lenses. Discovering that our senses can be extended with technology was the quantum leap that began to delineate and define what became The Scientific Method.
In the case of Air it was completely obvious to our earliest ancestors that air is real. We need it to have breath and without it we die. Finding a solution to how we discover it's nature took us out of the prison of mere speculation and started the systematic road map for the most productive ways to discover Objective Truth. It starts with a problem or question and usually develops a checklist of possibilities, some of which are quickly falsified and dismissed, and others that take very long times and many attempts at inquiry to arrive at firm probabilities of accuracy.
Dark Matter, whatever that will turn out to be, firmly exists. The phenomena has been attacked from numerous angles from a wide variety of disciplines with wide variety of technologies and the results all agree with each other so far that something exists that has extreme gravitational effects everywhere we look.
Fritz Zwicke saw vague clues in his time and Vera Rubin saw that as a relatively unexplored phenomena and ripe for her inquiry. At first, naturally she received strong skepticism but as the data mounted and other experts in the fields saw that her methods were accurate, thorough and exacting, the weight of the data became compelling and progressed to overwhelming... overwhelming that something universal exists that literally holds galaxies together everywhere and contributes to, if not the cause of, Gravitational Lensing.
We don't yet know what Dark Matter is but we have accumulated a list of what it isn't, which is the common first steps in solving mysteries. Personally I doubt that the Vera Rubin telescope alone will solve the mystery but it will "kick the ball down the field" toward that goal. That's how Science works. Small steps by teams to reach a goal... on the shoulders of giants.
|
|
|
All times are GMT -5. The time now is 10:23 PM.
|
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.
|
Latest Threads
LQ News
|
|