How the Euclid Telescope will map the Dark Universe
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- Опубліковано 9 чер 2024
- 00:00 Introduction: How Euclid will map the Dark Universe
02:03 The Euclid Survey
04:57 The First Images & Spectra
07:27 How Euclid will Detect Dark Matter
10:12 What We'll Learn
12:13 Additional non-Cosmology Science
13:16 When Will We Get Data?
14:02 Overlap with Rubin Observatory and Roman Space Telescope
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🧭 References:
Euclid Consortium: www.euclid-ec.org
Euclid Definition Study (2011): arxiv.org/abs/1110.3193
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Earth - Наука та технологія
I can count on my fingers the number of comments I wrote on a UA-cam video, but I want to make sure that Launch Pad Astronomy is aware that everything he publishes is actually top notch content.
You are so kind, thank you!
I'm a simple man. I see your newly uploaded video, i click to watch... immediately.
I seriously appreciate that you went into detail on how the data is processed and analyzed. The way that they calculate the distribution of dark matter from their observations is something I've always wondered, and I always assumed it was a bunch of unintuitive mathematical magic (mathemagic?), but you've given a really intuitive high-level explanation!
Mathemagic is the correct medical term and that is why I love this channel so much. He used to work on Hubble so it's like hearing from the people that work on the thing almost.
Your explanations from a science instrument and data processing perspective is the best in the business. Keep up the great work, no other science communicators are bringing these types details to us space fans!
Thank you, that's so much appreciated!
Finally, a real science channel with an actual person on video talking.
I will subscribe. ❤🙌
Happy to have you along for the ride!
Just a brilliant educational talk. Thank you for your service.
My pleasure, and thank you for the kind words!
Yes! Thank you for making a video covering Euclid. Haven’t seen anyone else go into detail as to how Euclid works.
The "Zodiacal light" mentioned around the 3 minute mark was the subject of Brian May's PhD thesis (Brian Bay became famous as the guitarist in a rock band called Queen). Dr. May had to put his degree aspirations on hold for a couple of decades while he was touring the world with the band but finished it and the observations as well as the conclusions he made earlier are still valid and useful research.
I was blown away by the overall presentation of the content. It reminded me of the special episodes on a topic they used to have on TV way back in the 90's....discovery channel or TLC I believe. Subscribed, for sure. Thank you.
I think this is one of the greatest achievements of humanity. Mapping the universe. This will lay the cornerstone for future science and space travel. We are first to expand humanities observational realm to the almost entire possible-visible universe
CHRISTIAN!!! I'm def late to the party!!! I'm always amazed at how with each telescope we come up with, the bigger and clearer the picture of the universe is getting!! This seems like a great tool!!!
Same here!
Awesome explanation of Euclid's mission Cristian! Well done!
Thanks a million!
Awesome coverage of Euclid. As with every new telescope, new and exciting discoveries are certain!
Launch Pad!! Young man, there you are!! I'm so excited! Been needing a good dose of LPA! Thank you for being you and doing what you do! 🍻🌎❤️🚀🎶🕺
You are so very kind, thank you!
@@LaunchPadAstronomy you have been so kind and amazing from the moment I fell upon a live stream a couple of years ago and instead of making fun of me for not knowing who the guest was, you took a few moments and gave me a quick run down and just suggested I stick around and see how it goes and ask questions if necessary... Maybe not verbatim, but very polite and always kind and responsive since! I try to catch whatever comes out 🍻🌎❤️🚀
You are the best and most informative!
Great graphics, very interesting and informative, thank you sir.
Superb content, as usual.
From your videos we know about the JWST device and detectors. Please tell us more about the device and equipment of Euclid. Thank you in advance.
It’s insane that when I was a child we were just starting to piece together the rough distribution of mater in the universe. And now we are on the cusp of knowing the positions of BILLIONS of galaxies!
Your videos have always been some of my favorites for years since I ran across the channel and I just realized why I enjoy your presence so much. You were the first "UA-camr" I respected and in such a friendly manner, plus you have continued to do so over quite some time. Appreciate all of your time and patience! 🍻🌎♥️🎶🕺
LETS FREAKIN GO! new content on a rainy day. yes please!☺☺☺
This launch was surprisingly quiet. Good to hear some interesting facts about Euclid, thanks!
Yeah, it was a little on the down-low, but I'm glad it's up and running smoothly!
My favorite science channel. He goes very in-depth technically which is digestible.
Thanks!
This was one of the best videos on this subject! Thank you, Christian! And thats one of my favorite shirts of yours! :)
Thank you! And it’s one of my favorites as well :)
Amazing information, hard to take it all in. Much appreciated!
I would like to thank for this educational video. You always bring great content well explained in so much detail. Awesome work!
Very exciting machine . Thanks for the awesome video.
Thank you for this!! Super interesting, but also helped me prepare my final presentation for astronomy this semester. 😊
wow! now i understand the value of Euclid! Thanks!!😮❤
thanks for these videos, they are immensely educational!
10/10… love your content 👍👍👍
Thanks 😁
Good one, thanks for all your efforts.
Can they tell if its a loop of lazy lightning? Thank you Christian, I've been wanting an understanding of Euclid and how it differs/fits in with JWST, Hubble etc. and now i've got it! Marvellous man!
I'm not a physicist, but I am a scientist, and for my money Christian is the best science educator on youtube right now.
Thank you! A nice concise yet informative explanation. I'm still trying to wrap my head around this whole Dark matter/energy concept(s), as they seem to be changing as scientists find more holes in the current model-de-jour. And I so prefer a real, live voice over the synthesized voices of some channels.
Your videos are the greatest.
Thanks man!
Thank you. 👍
Thank you for another great insight!
Thank you, nice and accurate summary of our mission! (Euclid NISP photometry instrument scientist writing here)
Wow, thank you, I’m so glad I didn’t mess it up too badly 🙂
Great video man.
Great report Sir🌄
Another wonderful presentation
Thank you for over-simplifying it for me.
Love the video.
Thanks!
Thank you so much
Sloan Sky Survey Telescope is at Apache point in New Mexico!
Of course it is!!! Why did I say Arizona? Ugh
Best video on youtube on Euclid - easily.
Having said that, LUVOIR-A or the Carl Sagan Observatory are what I want to see. I hope to see an image of an exoplanet before my life finishes as well as to gather enough data to perform a statistical analysis that would give us a good idea on whether or not we truly are alone in the universe.
4:25 - technically true but I think it's important to distinguish between magnitude and surface brightness
Wow. Truly a time to be alive and get information like this!
Hope to see you again soon! Miss your videos.
Wow! How exciting!
How will the Euclid know that the gravitational lensing is due to dark matter as opposed to random black holes distributed throughout space? The black holes will distort less?
I liked the “soup nazi” reference humor 🤣😂👍🏻
Nice
Very enjoyable, can anyone provide some insight on how the DESI survey will contribute to the data gathered by the surveys discussed in video.
As always, excellent video!
But the matter in the universe is like 85% dark isn't it? The 95% figure is the dark part of the matter+energy?
Yep, I messed that up :(
Hello! SDSS Sloan Digital Sky Survey Telescope is in southern New Mexico 😁 ( not Arizona)
2B A.B.B. Mustve been a crazy year
If "dark matter" was called "invisible matter" instead then you would never have to explain that it isn't actually dark but it is invisible.
Yes, but then again this is the field where we call the remnants of dying stars "planetary nebulae" and O & B-type stars "early" and K & M-type stars "late". This is the field where nothing is named correctly!
I heard about microlensing for the first time... Can you please elaborate this microlensing?...
When are we going to see the First light from the Giant Magellan Telescope?
Professor Ready :- Can you please talk about JuMBO's, jupiter mass binary objects, a recent discovery in orion nebula based on Jwst observations.
Just after Watching a Video on the
Use of Geometry by Babylonians
much earlier to Tract the Movement
of Jupiter in the Sky. 😊
Far out man🌍
When can we all just agree that JWST should be referred to as J-Dubs when talking about it?
guayabera, or bowling shirt?
Not sure, but it’s one of my favorites.
No high energy astrophysics for US, not just for YOU.
Yeah :(
I'm still wondering why they didn't use S-shaped secondary supports. I believe they would eliminate star spikes. The design sure looks like it could have been built this way.
Good question. I'm not sure, but if I had to guess they probably went with a design that they knew could survive launch. Besides, they're not going to be looking at stars very much anyways.
@@LaunchPadAstronomy That's a reasonable answer. I would expect a similar response from those who do know, thinking about it.
I don't understand how one can attribute lensing due to dark matter in the foreground cluster as opposed to due to the supermassive black holes in the foreground cluster.
SMBHs are at the centers of those galaxies in the foreground cluster, but their mass isn't enough to create the lensing we see. For example, the milky way's SMBH, Sag A*, is 4 million solar masses, yet the Milky Way has ~400 billion solar masses worth of stars. The black hole is *tiny* compared to the rest of the galaxy, and doesn't exert enough gravitational pull to keep the rest of the stars in orbit around it, let alone everything else!
@@LaunchPadAstronomyso the sagA SMBH seeds the central mass that eventually builds and directs the form of the circling spiral galaxy?
11:26 What are the units on the x Axis? lol
That's redshift. I should have added that to the graph.
Hi
Why they have to put Euclid at L2 ? I got it about JWST , but this one.
Same reason, actually - so they can keep it cold for the near-infrared work. It's really the best place to put any astronomical telescope.
How can the universe be flat? How can galaxies expand away from each other in all directions if this is the case?
Flatness is about geometry, not about size. And galaxies (which are not close to each other) expand away from others because the physical space between them expands.
1:15 - *dark matter and dark energy
Russia gettin' it from all sides.. even their own moon lander boycotted them.
At a very high rate of speed, it seems.
Russian scientists must eye-rolling, head-shaking and tut-tutting at Putin big time...
3rd
1:15 saying that 95% of the universe is in the form of dark matter. No. The current estimates are about 27% dark matter and about 68% dark energy. Together they add to a bit more than 95%.
95% of the matter in the universe is in the form of dark matter. But later in the video I quote the composition of the universe using the numbers you cited.
@@LaunchPadAstronomy Please check again. 85% of the matter is dark.
Your videos and explanations are easy for the layman to understand.
I also thank you for explaining that how Russia violates international law so they get left behind and loose access to space exploration opportunities. Amazing video in every way.
Thanks! I know the impact to astronomy is insignificant compared to the impact to Ukraine but Russia’s invasion does have impacts that go far beyond the war.
@@LaunchPadAstronomyAbsolutely!
I don't understand the concept of calling the universe Flat and havn't seen anybody explaining it.
"What does a flat universe mean, though? This flatness isn’t the two-dimensional kind we often encounter in everyday life, but you can envision it with a few analogies.
Say you’re standing in one corner of a square room. Walk 10 feet along the wall to the next corner, then turn 90 degrees. Walk another 10 feet and turn 90 degrees again. Do this twice more and you’ll find yourself back where you started - you’ve completed a square. This is the standard Euclidean geometry that we all learned in high school, and if you add one more dimension you get a flat universe.
But conducting this experiment on a positively curved space that's representative of a closed universe would create a different outcome. This time, start at Earth's equator and walk to the North Pole. Then, turn 90 degrees and walk back to the equator. Turn 90 degrees once more and walk back to your starting point. In the flat universe example, it took four turns to get back to where you started, but only three in the closed universe example.
If you're (understandably) still confused, here's another example: In a flat universe, two rockets flying next to each other will always remain parallel. This is unlike a closed universe, in which the paths of these two rockets will diverge, trek along the curvature of space, and eventually loop around to meet where they started. And in a negatively curved, open universe, the rockets will separate and never cross paths again." m.astronomy.com/news/2021/02/what-shape-is-the-universe
Fair point. I should have clarified that. In a "flat" universe, objects on parallel paths will remain parallel, presumably for eternity as it implies the universe is also infinite. It's a fascinating topic, but it really merits its own video.
@@LaunchPadAstronomy Thank you that clarifies it :)
1:32 Universe is flat! Ok, fine with me! But, wait til flatearthers hear that!🤣😂
Should get a T-shirt that says "Flat Universe Society" 🙂
They. Thinks it flat,like they Earth,I think it never ending in all directions.just saying.
It's likely dark matter doesn't exist
Why is the Universe limited to 3 shapes... not even interesting shapes at that?
So are distorted by dark matter because we are in a black ⚫️ hole 🕳 🤔
I thought you're gonna talk about what India has accomplished recently. It seems not that important for you? 😮
I really wish scientists/popularizers would stop using the term “dark matter”. We have no idea whether the gravitational influence is in fact “matter”.
Way to pick a meaningless nit.
WRONG😡
😣😖 Wasting taxpayers money on redundant telescopes 😣😖