why none of these articles mention non-desarguian geometry?
Why would a popular science article mention a very technical term that does not provide any additional insight?
Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space
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Re: Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space
#12Earlier quoted context omitted.
Yep, and the article pretty much admits that in the second half. The featured picture itself is years old. Title is pure clickbait.
Its not clickbait - the article says we know about less than 12 Einstein rings. So finding 1 occurence of something we've only seen 12 of seems significant.
Hmm... I could've sworn I've seen that exact photo several times before. But NASA does seem to claim it's new. Or at least the nasa.gov page was edited recently...
Re: Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space
#13According to comments here we've apparently taken pictures of these before, but I didn't know that and it's amazing seeing an actual photo of something so dramatic.
Re: Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space
#14This is lame in comparison with the cosmic smiley face: https://www.space.com/28512-cosmic-smiley-face-hubble-photo....
Re: Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space
#15why none of these articles mention non-desarguian geometry?
Enlighten us with what that means and perhaps we'll be able to tell you why its not in the article...
Re: Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space
#16Is there an active survey underway to find other examples or do they stumble across one when reviewing images acquired earlier for completely different purposes? Are there automated scanners that can search or is it by human observation?
Re: Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space
#17It seems like these would be more prevalent, at least partial "rings". With how large space is, I'd assume there has to be something SUPER bright behind tons SUPER massive objects/clusters/whatever.
I guess we just aren't always lined up with them?
Re: Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space
#18They're quite neat, but haven't we had pictures of these for quite a while? Is there something new about this one, or is it ("just") an article reminding people that cool stuff still exists?
Yes, the article is distinctly missing the word "another".
Re: Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space
#19Is there an active survey underway to find other examples or do they stumble across one when reviewing images acquired earlier for completely different purposes? Are there automated scanners that can search or is it by human observation?
Yes actually, sort of. Gravitational lensing of remote galaxies is one of the core techniques for mapping the 3D distribution of mass in nearer galaxies and galaxy clusters, which makes it a fantastic tool for studying dark matter. Occasionally they find these Einstein rings as well.
Re: Hubble Telescope Discovers a Light-Bending 'Einstein Ring' in Space
#20Quite OT, but these phenomena always reminds me of how wrong (popular understanding of) Einstein actually is. Whereas gravity according to that understanding warps the fabric of space itself, these pictures prove that gravity actually only appears to warp space.
I.e. our intuitive, euclidean concept of space is actually the most correct, albeit an abstract, inferred phenomenon.