How One Supernova Measured The Universe
4,836,896
Published 2020-10-20
Special thanks to Geraint Lewis for consulting on gravitational lensing. Check out his YouTube channel: ve42.co/gfl and books: ve42.co/GFLbooks
The supernova image in the thumbnail is from my documentary, Uranium: Twisting The Dragon's Tail. Check it out here: genepoolproductions.com/uranium-project
References:
DEJA VU ALL OVER AGAIN: THE REAPPEARANCE OF SUPERNOVA REFSDAL
P. L. Kelly et al. arxiv.org/abs/1512.04654
Predicted properties of multiple images of the strongly lensed supernova SN Refsdal
Masamune Oguri. Monthly Notices of the Royal Astronomical Society: Letters, Volume 449, Issue 1, 01 May 2015, Pages L86–L89, arxiv.org/abs/1411.6443
Multiple Images of a Highly Magnified Supernova Formed by an Early-Type Cluster Galaxy Lens
Patrick L. Kelly et al. arxiv.org/abs/1411.6009
"Refsdal" meets Popper: comparing predictions of the re-appearance of the multiply imaged supernova behind MACSJ1149.5+2223. T. Treu et al. arxiv.org/abs/1510.05750
Irwin I. Shapiro (1964). "Fourth Test of General Relativity". Physical Review Letters. 13 (26): 789–791. doi:10.1103/PhysRevLett.13.789
Irwin I. Shapiro; Gordon H. Pettengill; Michael E. Ash; Melvin L. Stone; et al. (1968). "Fourth Test of General Relativity: Preliminary Results". Physical Review Letters. 20 (22): 1265–1269. doi:10.1103/PhysRevLett.20.1265
Research & Writing by Stephanie Hamilton, Ralph Crewe, Petr Lebedev, Derek Muller, and Jonny Hyman
Animations & VFX by Jonny Hyman & Ivy Tello
Thanks to Jaime Portsmouth for his gravitational lensing simulator and help enabling it to render simulations.
Supernova simulations courtesy of Adam Burrows
Numerous hubble images by Hubble Legacy Archive, NASA/ESA/STScI
Numerous images by ESO / NASA
All Comments (21)
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"Do you notice that the same galaxy appears three times in the image?" Yeah I totally noticed
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Its incredible how much info scientists can extract from these tiny little smears of light
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“Hey did you catch the supernova? If not, no worries, they’ll play re-runs in a year. Or twenty.”
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The more we learn, the crazier the universe becomes.
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Teacher in online class: why are you late? Me: gravitational time delay.
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It is awesome to see you talk about such current research in Astrophysics. As a Phd student who grinds these papers every day it is a joy to see you manage to share these concepts so understandable and yet very accurately. It is a joy to watch!
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This blows my mind. I've always understood the concept of how objects in the sky are so far away that it takes a long time for the light to reach Earth, as if we're looking into the past. But I never considered the fact that objects between us and what we're observing could distort our observation. Science never ceases to amaze me.
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The fact that there are multiple images of the same galaxies, delaying the light that arrives to us at different intervals is blowing my mind. I never knew something like this exists. It's cool to keep learning new things about space that continue to astound me. I'll never get tired of it.
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One of the few youtubers that always produces top notch content is now pouring it en masse! Guess not all is bad for 2020.
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Quality or Quantity, choose one and choose wisely Derek from Veritasium: I choose them both ❤️❤️❤️❤️
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I never heard someone pronounce Betelgeuse as beetle juice tbh
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Veritasium: Trying hard to explain gravitational lens Me: 6:28 Smiley face
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That is legitimately mind blowing. To see the exact same event not just on multiple places, but also at different times. And not only twice but six times? Imagine that in an ordinary world setting. Literally deja vu.
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So basically, every moment of every day is echoed through the eternity of space time, for all eternity? That’s pretty friggin amazing. The observable light that reflects from us out into the cosmos never goes away. Yeah I don’t feel insignificant or anything lol
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That closing remark beginning @11:36 is amazing. I had to go back a few times to listen to that. “What is contained in those distortions is information about the workings of our entire universe.” It’s really amazing how we can see so far away and glean bits of information.
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I’m so glad there are people smart enough to know what’s going on when they look through a telescope lol
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What I learned from this video: Cosmologists are smart AF.
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"How fast are we expanding?" Judging by the amount of tacos I'm eating... We be expanding fast
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It is so refreshing that somebody not just asks more questions, but answers the ones I was never even asked, but always wanted to know!
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This is the kind of content that needs to be on the trending tab
