Does Dark Energy Exist? The Timescape model says no Dr. Ryan Ridden 2024-12-19 | The standard model of cosmology says that the accelerated expansion of the Universe is driven by Dark Energy, but is this true? The Timescape model of cosmology says no. Instead of Dark Energy it says that the effects of large-scale cosmic structure are responsible. Alongside the creator of Timescape, I tested the theory using supernova data and found something surprising. You can find the paper here:academic.oup.com/mnrasl/article/537/1/L55/7926647Press release from the Royal Astronomical Society:ras.ac.uk/news-and-press/research-highlights/dark-energy-doesnt-exist-so-cant-be-pushing-lumpy-universe-apartMusic:Lament (Golden Light) · Devon ChurchMaestro Tlakaelel · Jesse GallagherFluidscape · Kevin MacLeodPure Potentiality · Benjamin Martins#cosmology #timescape #darkenergy
Help us Discover Cosmic Cataclysms Dr. Ryan Ridden 2025-01-07 | The Cosmic Cataclysms Zooniverse project is searching for explosions in space that last less than a day using NASA's TESS space telescope. You can help out by joining the search:zooniverse.org/projects/cheerfuluser/cosmic-cataclysmsA longer lecture on the science behind this project:youtu.be/z3ss3bZXtuE#astronomy #supernova #CosmicCataclysms
Cosmic Cataclysms: A dynamic and changing Universe. Beatrice Hill Tinsley Lecture series Dr. Ryan Ridden 2024-11-09 | A bright flash outshines its entire galaxy, but only for a brief moment. The vast distance between us hides the true power of this cataclysm, but catching it with our telescopes allows us to piece together what exploded, and how it exploded. We’ve discovered a zoo of cosmic cataclysms, each giving us new insights into the physics and evolution of our Universe. In this talk we’ll explore the zoo of cosmic cataclysms, what they’ve taught us, and the ongoing search for rare and bizarre explosions.
3 years later Dr. Ryan Ridden 2024-11-09 | It's been far longer since the last video than I expected. What happened in the last 3 years?GRB afterglow paper:arxiv.org/abs/2307.11294Music:Liara's world Mass Effect soundtrack by Jack WallI Am Running Down the Long Hallway of Viewmont Elementary by Chris Zabriskie is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0Source: http://chriszabriskie.com/honorArtist: http://chriszabriskie.com
Observing on a Moonlit Sky Dr. Ryan Ridden 2022-01-14 | The Moon is evil and ruins all data, but sometimes it does look nice...#shorts #astronomy
Dont Look Up - Astronomer reacts Dr. Ryan Ridden 2021-12-27 | How realistic is the astronomy in the movie about astronomers trying to stop the end of the world?#dontlookup Music:Fluidscape by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100393Artist: http://incompetech.com
Massive Aurora! The physics behind the light show Dr. Ryan Ridden 2021-11-06 | While observing at the observatory in Takapō I was lucky enough to witness the largest aurora that New Zealand has had in a long time. We'll look at the physics behind what makes them and then some awesome time-lapses I made of it!
Physics of Making and Breaking Space Elevators - Science of the Foundation Dr. Ryan Ridden 2021-10-04 | The first episode of the new series Foundation showed off just how cool and useful space elevators can be, but are they possible? Lets look at the physics of space elevators and see if the Foundation gets things right.#Foundation #space #elevator
Science Stream: Ceres-ous Science! Dr. Ryan Ridden 2021-09-03 | It's been a long time since the last science stream, and I have some data to mess around with on Ceres, the largest object of the asteroid belt, so let's have a science stream!
The surprising way a Snowflake has more energy than a black hole Dr. Ryan Ridden 2021-08-19 | What words would you use to describe the Universe? I would guess they have nothing to do with a snowflake, but for radio astronomy snowflakes dwarf the amount of energy they have seen!Music:Fluidscape by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100393Artist: http://incompetech.com
My New Job In Astronomy! Dr. Ryan Ridden 2021-08-18 | I'm extremely lucky to have the opportunity for a new adventure working in Aotearoa New Zealand as an astronomer. I'll be messing around with telescopes and setting up outreach programs, its going to be a lot of fun!
How Are Galaxies Disappearing From The Universe? #VeritasiumContest Dr. Ryan Ridden 2021-07-27 | Galaxies are scattered across the void of space but one day in the far distant future, images like the Hubble Deep Field will be impossible. Space, thanks to dark energy, will push the galaxies away faster than the speed of light, making the Universe a very lonely place.Music:Wander - Emmit Fenn#VeritasiumContest #galaxies #shortsTo contact me send an email to:ryanridden@gmail.com
Audio Paper: No Rotational Variability in Bernardinelli-Bernstein as Seen by TESS Dr. Ryan Ridden 2021-07-26 | The massive comet Bernardinelli-Bernstein was detected at the edge of the solar system. By chance it was observed by TESS and this is a reading of the short scientific paper, or kind of audio paper! If you want to look at the paper for yourself, you can find it here: iopscience.iop.org/article/10.3847/2515-5172/ac1512
What has this Astrophysicist Been Working on? Dr. Ryan Ridden 2021-07-13 | It's been a month since my last video!? What have I been doing with that time? Hopefully a few useful things building tools for astronomers to use to make life easier, and studying a big comet that was discovered at the edge of the Solar System.
Lunar Eclipse! (and the ranting of a grumpy astronomer) Dr. Ryan Ridden 2021-05-25 | Make sure you see the total lunar eclipse happening on the 26th of May 2021 it will be cool! Whats with the media calling these blood moons and all manors of weird and stupid name that make no sense? This astronomer needs to have a rant about it.Link for eclipse times:timeanddate.com/eclipse/lunar/2014-april-15#:~:text=April%2014%E2%80%9315%2C%202014%20Total%20Lunar%20Eclipse%20(Blood%20Moon)&text=A%20total%20lunar%20eclipse%20will,will%20see%20a%20partial%20eclipse.
How Does Pluto in Retrograde Affect You? - the astrophysics of astrology Dr. Ryan Ridden 2021-05-24 | Google decided I wanted to read about how Pluto will affect us according to astrology, and I guess it was right!
Why We Cant Terraform Mars Dr. Ryan Ridden 2021-05-08 | Currently the Earth is the only world full of life, but could we terraform Mars to make it a second harbor for life? In short no. As ambitious as the plans of Space X and Elon Musk are, fighting the Sun is something that we just can't do for now. But even if we can't terraform Mars, we should still work to make it a new home for humanity.
Science Stream: Things that stars do Dr. Ryan Ridden 2021-05-01 | Ever wondered what space telescope data looks like? Well you're in luck! We'll be going through data from the TESS space telescope looking at variable stars, supernovae and whatever else comes up.
Astrophysicists Review the First Science Fiction - True Story by Lucian Dr. Ryan Ridden 2021-04-28 | What is the first recorded science fiction story, and how does it compare to what we know now? Two astrophysicists review the science and fiction of True Story written by Lucius.Link to ebook:http://www.gutenberg.org/files/10430/10430-h/10430-h.htmLink to @ScifiHub audio book:youtube.com/watch?v=9ieKMhDBVAQMusic:Fluidscape by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100393Artist: http://incompetech.com
First Gamma Ray Burst Seen With TESS Dr. Ryan Ridden 2021-04-21 | While looking for planets around other stars TESS has watched its first gamma ray burst go off incredibly far away from us. In a recently published paper lead by Krista Lynne Smith we explore what TESS can tell us about these mysterious explosions.Link to the paper:arxiv.org/pdf/2102.11295.pdfLink to the Github repo:github.com/CheerfulUser/grb191016a/blob/main/Reduction_for_GRB191016A.ipynbLink to the Google Colab:colab.research.google.com/drive/1V1ovtsGZCPoauZBu4QT4k2KY2SrXYJfi?usp=sharingMusic:Fluidscape by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100393Artist: http://incompetech.com
Did the Fermilab Muon g-2 experiment break physics? Dr. Ryan Ridden 2021-04-12 | Looks like the standard model of particle physics has a new challenger, the Muon g-2 experiment from @fermilab. Who will win decades of human thought, or an overweight electron?Muon g-2 collaboration public lecture:youtu.be/81PfYnpuOPAMusic:Fluidscape by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100393Artist: http://incompetech.com
What do Astronomers do for April Fools? Dr. Ryan Ridden 2021-04-07 | Where am I and what do astronomers do for April Fools? Detection of Rotational Variability in Floofy Objects at Optical Wavelengths:arxiv.org/pdf/2103.16636.pdf“I’ll Finish It This Week” And Other Lies:arxiv.org/pdf/2103.16574.pdf
Persevering for life on Mars Dr. Ryan Ridden 2021-02-26 | Our perception of life on Mars has a lot over the past century thanks to the incredible missions to Mars. We have learnt how Mars has changed over time and with the Perseverance rover we may finally know if there was once life on Mars. #Mars #Perseverance Music:End of the Era by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100452Artist: http://incompetech.comMars - Gustav HolstThe sleeping prophet - Jesse Gallagher
The Expanse Physics is Kind of Right With Circling Ships Dr. Ryan Ridden 2021-02-17 | Check out Dementikko's video! youtube.com/watch?v=I5EEsaT7fbM&feature=youtu.beIf you want to mess around with the code:github.com/CheerfulUser/Chetzemoka_path/tree/main
The Physics Behind Why the Expanse Circling Ship Was Wrong Dr. Ryan Ridden 2021-02-16 | Since a lot of people were unconvinced by my last video, here is the cold hard mathematics of why the ship revolving around Naomi was wrong. No observer would see circular motion.#Newton #says #no
Testing Physics of The Expanse With Kerbal Space Program Dr. Ryan Ridden 2021-02-14 | Season 5 of the Expanse has come to an end, and there was an interesting bit of physics in the final episode. Was it possible for Naomi to actually make her ship spin in a circle? Let's sacrifice some Kerbals and look at physics to find an answer.#expanse #season5 #ksp
Is There an Alien Crisis in Astronomy? Was ‘Oumuamua natural or artificial? Dr. Ryan Ridden 2021-02-08 | Why is the interstellar interloper ‘Oumuamua from 2017 back in the news? Is Professor Avi Loeb right, is there an alien and ego crisis in astronomy?My rambling thoughts on the on the matter Cool Worlds video:youtu.be/qX_Bj7064MsScientific American Article:scientificamerican.com/article/astronomer-avi-loeb-says-aliens-have-visited-and-hes-not-kidding1Starts with a Bang: The Uncensored Guide To ‘Oumuamua, Aliens, And That Harvard Astronomerforbes.com/sites/startswithabang/2021/01/28/the-uncensored-guide-to-oumuamua-aliens-and-that-harvard-astronomer/?sh=396494296abeThe Natural History of ‘Oumuamuaarxiv.org/pdf/1907.01910.pdf
Are the Expanse Ships Realistic? - Science of the Expanse Dr. Ryan Ridden 2021-02-03 | Science fiction is often a window into the science of tomorrow, so what do shows like Star Trek and the Expanse predict the space ships of tomorrow will look like?#spaceships #canalhouse #Expanse
1000 Subscribers! Weve smashed a goal I had for this year! Dr. Ryan Ridden 2021-01-31 | Massive thanks to everyone who has subscribed, I really appreciate and am excited to see what we will learn!
Could Aliens See the Dinosaurs? Dr. Ryan Ridden 2021-01-25 | Fossils are great, but actually watching dinosaurs go about their lives would be much better. Does astronomy give us or some distant aliens the chance to see the great dinosaurs in action?Find me on Twitter if you want to talk science! twitter.com/RyanRidden#dinosaur #alien #telescope
Science of The Expanse - Could you Survive the Vacuum of Space? Dr. Ryan Ridden 2021-01-17 | The vacuum of space is no place for a human without a suit, but would it kill you immediately?#Season5 #TheExpanse #spaced
Science Stream: 237 AAS Science Posters Dr. Ryan Ridden 2021-01-14 | This week is the 237th American Astronomical Society meeting. There will be lots of incredible research on display, join me as we look through some of the fantastic scientific posters from this conference.
Ill be Talking at the Biggest Astronomy Conference of the Year Dr. Ryan Ridden 2021-01-11 | This week is the 237th meeting of the American Astronomical Society, where astronomers from across the world will present their work. I'll be sharing some code I have developed to make study supernovae with TESS easier for everyone. Join me on the 14th for the science poser live stream!youtu.be/c_Xgmn5VNJM#237AAS
Is The Expanse Scientifically Accurate? - Asteroids Dr. Ryan Ridden 2021-01-06 | In season 5 of the Expanse tragedy strikes the Earth in the form of an asteroid. How accurate does the expanse get asteroid strikes, and is there anything we can learn from this grim but hopeful future?#season5 #expanse # asteroid
Inside an Astrophysicists Spam folder Dr. Ryan Ridden 2021-01-03 | What dangers lurk in the spam folder of a scientist, or in particular an astrophysicist? Let's take a look and go on a few rants about journals in science. #spam #emails
Simulating Exploding Stars - Science Stream Dr. Ryan Ridden 2020-12-28 | I'll be writing some python code to model data from supernovae observed by TESS. I'll be explaining everything as I go so drop in to see science in action and of course ask any questions along the way!
Im Officially a Doctor! Dr. Ryan Ridden 2020-12-22 | After 20 years of school/University I now have my PhD in astronomy/astrophysics. I won't much help giving you health advice, but I can help you understand exploding stars! #I #doctor #now
Alien Radio Signals From Proxima Centauri? Dr. Ryan Ridden 2020-12-20 | The Breakthrough Listen project has detected strange signals coming from Proxima Centauri, could this be the first evidence that we aren't alone in the Universe?#its #never #aliens
Is the Galaxy in Halo 3 Scientifically Accurate? Dr. Ryan Ridden 2020-12-09 | You might be saving the Milky way in Halo 3, but what type of galaxy is it, and is its depiction from the Ark scientifically accurate?#halo3 #galaxyAll music used in this video comes from the fantastic Halo 3: Original Soundtrack . Tracks used are:Luck · Martin O'Donnell · Michael SalvatoriFarthest Outpost · Martin O'Donnell · Michael SalvatoriOut of Shadow · Martin O'Donnell · Michael SalvatoriTribute · Martin O'Donnell · Michael SalvatoriOne Final Effort · Martin O'Donnell · Michael SalvatoriHalo 3 (Original Soundtrack)℗ 2007 Microsoft Corporation
How Astronomers Apply to Use the $10 Billion James Webb Space Telescope Dr. Ryan Ridden 2020-11-30 | Last week astronomers across the world submitted their applications to get time on the 10 billion dollar James Webb Space Telescope scheduled to launch next year. What do they actually need to do to have a chance at using the greatest space telescope humanity has ever built?#jwst #astronomyThroughout the video I use the amazing graphics and videos from the NASA JWST gallery:svs.gsfc.nasa.gov/Gallery/JWST.htmlMusic:Oxygen Garden by Chris Zabriskie is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0Source: http://chriszabriskie.com/dividerArtist: http://chriszabriskie.comCandlepower by Chris Zabriskie is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0Source: http://chriszabriskie.com/dividerArtist: http://chriszabriskie.comLand on the Golden Gate by Chris Zabriskie is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/by/4.0Source: http://chriszabriskie.com/stuntislandArtist: http://chriszabriskie.com
Making Super Massive Black Holes with Quasistars Dr. Ryan Ridden 2020-11-27 | We see black holes billons of times the mass of our Sun just 700 millions of years after the Big Bang, we don't yet know how they formed, but maybe it's from stars powered by black holes called quasistars.
The Graveyard Universe Dr. Ryan Ridden 2020-11-01 | Our Universe is filled with the graves of countless stars, worlds, and possibly life, but thats a good thing. Without the death of stars we wouldn't have the wonderful and complex universe we do today.
Habitability of alien worlds Dr. Ryan Ridden 2020-10-20 | Understanding habitability is the first step in the search for alien life, but what makes the Earth a good place for life? Habitability is pretty complicated so let's go through some of the key factors that determine the habitability of a planet. This video was inspired by a the following paper:liebertpub.com/doi/10.1089/ast.2019.2161This video uses End of the Era by Kevin MacLeod which is licensed under a Creative Commons Attribution licence (creativecommons.org/licenses/by/4.0)Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100452Artist: http://incompetech.com
The First Extragalactic Exoplanet? Dr. Ryan Ridden 2020-09-28 | Astronomers claim to have found a planet in the Whirlpool galaxy 23 million light years away from us. How did they find it and is it really a planet?Extragalactic planet discovery paper preprint:arxiv.org/pdf/2009.08987.pdf
Discovering black holes: can something have too much mass? Dr. Ryan Ridden 2020-09-15 | Simple questions can lead us the frontiers of science and the fundamental limits of our Universe. Is it possible that black holes actually exist and how do they interact with our everything else around us?#too #much #mass
What if the Moon Disappeared? Dr. Ryan Ridden 2020-08-31 | Although the Moon might seem disconnected from the Earth, what would happen if it just disappeared? Nothing good for us, unless you like 24 hour clocks.#moon #discoball
Wandering Amongst the Stars: can we travel faster than light? Dr. Ryan Ridden 2020-08-10 | The Universe is inconceivably large, so is it even possible for us to really become explorers of the cosmos? Are there any propulsion ideas that could get us out amongst the stars, or is humanity trapped to this one cosmic corner?
The Beauty of Galaxies Dr. Ryan Ridden 2020-07-19 | Just 100 years ago we thought the Milky Way was the entire Universe. But some strange fuzzy blobs in the sky showed us that the Universe is larger than we could ever dream.
What if the Sun Turned into a Black Hole? Dr. Ryan Ridden 2020-07-05 | What would happen if we swapped the Sun with a Black hole? Would everything get sucked, or would everything be fine? One way to test this is by simulating our Solar System with Universe Sandbox! #blackhole #orbits #astronomyMusic credits:Solar Observer by Lars Leonhard larsleonhard.bandcamp.com/track/solar-observer
The Closest Discovered Black Hole! ... or is it? Dr. Ryan Ridden 2020-06-29 | Not long ago the discovery of a black hole just 1000 light years away from us was all over the headlines, but recent work suggests that there isn't a black hole at all. Is it there or not? Lets look at the papers to find out!#blackhole #closest #debateBBC article:bbc.com/news/science-environment-52560812#:~:text=Astronomers%20have%20a%20new%20candidate,it's%20actually%20right%20next%20door.Original paper:aanda.org/articles/aa/full_html/2020/05/aa38020-20/aa38020-20.htmlFirst contradicting paper:arxiv.org/abs/2006.11974Second contradicting paper:arxiv.org/pdf/2006.10770.pdf
