Re:The structure of the Milky Way
by krylon on Monday July 30, 2018 @12:46PM
(#17645814)
Is the text in the pictures German? Or do they localize the pictures?
Either way, one thing about astronomy I find really fascinating is how people are able to figure out so much from so little data[0]. The amount of head scratching and the number of sleepless nights spent trying to make sense of what little data is available must be almost as mind-bending as the stellar bodies astronomers study.
[0] "little" compared to what we could gather if we could just hop aboard the good old Enterprise and jet over to a couple of nearby stars, or at least take a quick field trip to Neptune...
Re:The structure of the Milky Way
by lisper on Monday July 30, 2018 @03:18PM
(#17647162)
Well, we have taken a couple of field trips to Neptune (and a bit beyond), but your point is well taken. It really is extraordinary how much the human mind can encompass.
Re:The structure of the Milky Way
by krylon on Monday August 06, 2018 @02:59PM
(#17700553)
Well, if we could board a shuttle and arrive at a stable orbit around Uranus or Neptuine in less than 12 hours, we would not need an orbiter, would we?
In the short term, if Webb got launched, that would be awesome. But in the slightly-longer term, there is so much about Uranus and Neptune to discover, and we haven't done anything on that front.
Just consider how much we discovered by sending probes to Jupiter and Saturn. Consider, how there is still to discover on Uranus and Neptune. And tell me you don't want to go there really badly.
Re:The structure of the Milky Way
by sbuttgereit on Tuesday July 31, 2018 @01:37AM
(#17650784)
Yep. This sentence in the first photo caption caught me off guard...
"The Milky Way system, called galaxis, resembles a gigantic spiral with an estimated 200 billion stars. One of them is our sun."
I've been an avid astronomy nerd since I was 5 (and I'm almost ten times that age now) and never heard the term "galaxis". The only reference I could find on Google was to the highly acclaimed movie of that name:
Re:The structure of the Milky Way
by krylon on Tuesday July 31, 2018 @11:50AM
(#17654242)
I think "galaxis" is the ancient latin term. Either way, the word "galaxy" is derived from ancient greek and "milky way" is an almost literal translation.
Re:The structure of the Milky Way
by pseudocook on Monday July 30, 2018 @08:18PM
(#17649485)
This article reminds me a lot of the book "A Fire upon the Deep" by Vernor Vinge.
While reading this article and viewing the diagram of the Milky Way, I wondered, does time pass more slowly from the point of view of those bodies near the center of the galaxy, which are moving more quickly?
Re:The structure of the Milky Way
by macintux on Monday July 30, 2018 @09:23PM
(#17649816)
Of course the faster you go the slower time passes but you have to travel at least 30% the speed of light to make a dramatic difference. See the table here:
Either way, one thing about astronomy I find really fascinating is how people are able to figure out so much from so little data[0]. The amount of head scratching and the number of sleepless nights spent trying to make sense of what little data is available must be almost as mind-bending as the stellar bodies astronomers study.
[0] "little" compared to what we could gather if we could just hop aboard the good old Enterprise and jet over to a couple of nearby stars, or at least take a quick field trip to Neptune...
https://futurism.com/earth-compared-to-the-universe/
http://thirdmonk.net/lifestyle/our-sun-compared-to-the-large...
And I would really like to know why Uranus' axis of rotation and its magnetic field are so weird. Wouldn't you?
Yeah, I'd love to have those orbiters. And a Europa lander. And a pony.
But I'll settle for getting the damn Webb launched.
In the short term, if Webb got launched, that would be awesome. But in the slightly-longer term, there is so much about Uranus and Neptune to discover, and we haven't done anything on that front.
Just consider how much we discovered by sending probes to Jupiter and Saturn. Consider, how there is still to discover on Uranus and Neptune. And tell me you don't want to go there really badly.
"Galaktische Scheibe" -> "galactic disc"
"Bulge" -> "bulge"
I just find it curious they would use images with German words on an English-speaking website.
It's in German for me too
"The Milky Way system, called galaxis, resembles a gigantic spiral with an estimated 200 billion stars. One of them is our sun."
I've been an avid astronomy nerd since I was 5 (and I'm almost ten times that age now) and never heard the term "galaxis". The only reference I could find on Google was to the highly acclaimed movie of that name:
https://www.imdb.com/title/tt0113140/
Now I realize they just didn't translate the word "galaxy" when they translated the text to English.
Why is this even permitted? It should be blackholed
While reading this article and viewing the diagram of the Milky Way, I wondered, does time pass more slowly from the point of view of those bodies near the center of the galaxy, which are moving more quickly?
http://www.emc2-explained.info/Time-Dilation-at-Low-Speeds/
https://en.wikipedia.org/wiki/S0%E2%80%93102
https://www.nature.com/articles/d41586-018-05825-3
which appears to be rounded up from actual 2.55% value:
https://en.wikipedia.org/wiki/S2_(star)#May_2018_pericentre_...