Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

NASA’s Webb takes star-filled portrait of Pillars of Creation

nasa.gov

Post reply on HN
Print view View original

191–196 of 196 posts

Re: NASA’s Webb takes star-filled portrait of Pillars of Creation

#191

Post by shagie »

mnw21cam wrote: post #45
shagie wrote: post #20

Earlier quoted context omitted.

A bit more cosmic scale that we can see over time are light echos: https://en.wikipedia.org/wiki/Light_echo In particular, the at https://en.wikipedia.org/wiki/V838_Monocerotis there's a video of the echo. For another dynamic area with things changing on a human lifespan, the black hole at the center of the galaxy we can watch stars orbit it. https://youtu.be/XA7CAVm31z0

The classic example of this is the Hubble Variable Nebula. See https://en.wikipedia.org/wiki/NGC_2261 and https://www.youtube.com/watch?v=LeiVERr2J2Q

WR 140 is also a neat one with cosmic scale structures. https://en.wikipedia.org/wiki/WR_140

And the mechanism for it - https://www.jpl.nasa.gov/news/star-duo-forms-fingerprint-in-...

Re: NASA’s Webb takes star-filled portrait of Pillars of Creation

#194

Post by fsckboy »

comboy wrote: post #17
debone wrote: post #10

Earlier quoted context omitted.

Ah, so radiation is being emitted and blocked in a way that coincides to the way we interpret 3d objects, is that right? Because if it would be uniform, the bright orange colors would be uniformly distributed?

> so radiation is being emitted and blocked in a way that coincides to the way we interpret 3d objects It's not coincidental, this is how our vision works.

> > so radiation is being emitted and blocked in a way that coincides to the way we interpret 3d objects

> It's not coincidental, this is how our vision works.

to preserve the meaning he intended with the meaning you are trying to refute, try instead the word "coincident"

It's not coincidental that the phenomena are coincident to how our vision words, the geometry of the science coincides

Re: NASA’s Webb takes star-filled portrait of Pillars of Creation

#195

Post by steffan »

itishappy wrote: post #70
steffan wrote: post #46

Earlier quoted context omitted.

I think they’re millions of galaxies , which is even more amazing

The YouTube link [1] states that most of these are in fact stars. The gas from the nebula obscures the distant galaxies we're used to seeing. [1] https://www.youtube.com/watch?v=1__KBHIo_xs

Thanks for the correction. I was thinking of images similar to the Hubble Deep Field in which there are an unimaginable number of galaxies.
Post reply on HN