I assume this is being hugged to death? 504 Gateway Time-out The server didn't respond in time.
HN often Slashdots stuff.
First pictures from Euclid satellite reveal billions of orphan stars
31–40 of 129 posts
Re: First pictures from Euclid satellite reveal billions of orphan stars
#32Always a bit special to see science come from a spacecraft I had the pleasure of working on. Honestly there were a lot of issues during the build of Euclid that I was very glad to not be a part of, but seeing the images coming out of it now is pretty damn impressive. Hope all of the engineers that struggled to get this mission spacebourne can enjoy!
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Re: First pictures from Euclid satellite reveal billions of orphan stars
#33We can spot the orphan stars at this distance. However, Euclid needs to turn to closer targets than the Pegasus cluster to spot rogue planets. https://www.theguardian.com/science/article/2024/may/23/eucl... . In this case, it found dozens of rogue planets in the Orion nebula, which is only 1,500 ly away. I am presuming there are also going to be great numbers of rogue planets in deep space, not tied to any star or ga…
It would be interesting to calculate how much these stars contribute to the mass deficit of the universe.
Not just stars, it implies there’s a lot of planets, asteroids, etc tossed out there.
Re: First pictures from Euclid satellite reveal billions of orphan stars
#34TFA specifies "more than 1,500 billion". That's more than a _trillion_, not "billions"! Why the reluctance to use the proper number?
A lot of people outside of HN don't know what a trillion is.
Tell them it's comparable to $1 bills laid end to end from here to the sun.
And tell them it's only 1/35 of the US national debt, which is roughly $350,000 per US taxpayer.
Re: First pictures from Euclid satellite reveal billions of orphan stars
#35Always a bit special to see science come from a spacecraft I had the pleasure of working on. Honestly there were a lot of issues during the build of Euclid that I was very glad to not be a part of, but seeing the images coming out of it now is pretty damn impressive. Hope all of the engineers that struggled to get this mission spacebourne can enjoy!
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Re: First pictures from Euclid satellite reveal billions of orphan stars
#36TFA specifies "more than 1,500 billion". That's more than a _trillion_, not "billions"! Why the reluctance to use the proper number?
The proper unit would be Parsec, imho
Re: First pictures from Euclid satellite reveal billions of orphan stars
#37Always a bit special to see science come from a spacecraft I had the pleasure of working on. Honestly there were a lot of issues during the build of Euclid that I was very glad to not be a part of, but seeing the images coming out of it now is pretty damn impressive. Hope all of the engineers that struggled to get this mission spacebourne can enjoy!
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Where did OP say failures? Don’t attack random strawmen with a prosecutorial line of questioning.
It’s completely fine to be working on software, witness a huge hardware issue that teams scramble to fix, be proud that they fixed it and happy to be part of the team while simultaneously being happy to not have to deal with that type of stress.
Re: First pictures from Euclid satellite reveal billions of orphan stars
#38Earlier quoted context omitted.
A lot of people outside of HN don't know what a trillion is.
Tell them it's comparable to $1 bills laid end to end from here to the sun. And tell them it's only 1/35 of the US national debt, which is roughly $350,000 per US taxpayer.
Easy fix, just use $100 bills and we are only 35% of the way to sun. Problem solved.
Re: First pictures from Euclid satellite reveal billions of orphan stars
#39The stars near us in the Milky Way are tens of light years away, and we’ll have to do some incredible science and technology to visit them.
How much worse would it be if you were an intelligent life form on a planet orbiting one of those orphans, and the nearest star was a thousand, ten thousand, even a million light years away?
Re: First pictures from Euclid satellite reveal billions of orphan stars
#40We can spot the orphan stars at this distance. However, Euclid needs to turn to closer targets than the Pegasus cluster to spot rogue planets. https://www.theguardian.com/science/article/2024/may/23/eucl... . In this case, it found dozens of rogue planets in the Orion nebula, which is only 1,500 ly away. I am presuming there are also going to be great numbers of rogue planets in deep space, not tied to any star or ga…
>We can spot the orphan stars at this distance. Can we resolve these individual orphan stars? Or just see the cumulative glow from a lot of them?
Note that there are two different announcements today, and I need to clarify my comment above.
• One piece cited viewing 1.5 trillion stars in the Perseus cluster of galaxies, which is 240 million ly distance: https://www.nottingham.ac.uk/news/first-pictures-from-euclid...
• The other cited spotted stars in galaxy cluster Abell 2390, which is in the Pegasus constellation, which is 2.7 billion ly away — an order of magnitude further away: https://www.esa.int/Science_Exploration/Space_Science/Euclid...
If I am reading this correctly, it seems like Euclid was able to see the light from individual stars ripped from their galaxies in Abell 2390. Which is quite the accomplishment.
Please let me know if I am reading too much into this, or reading it incorrectly.