#darkenergy — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #darkenergy, aggregated by home.social.
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A catalogue of 3,000 supernovae — the largest ever assembled — is challenging existing theories of dark energy
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A catalogue of 3,000 supernovae — the largest ever assembled — is challenging existing theories of dark energy
https://www.universetoday.com/articles/a-new-catalog-of-close-to-3000-supernova-challenges-theories-on-dark-energy
The most comprehensive catalogue of Type Ia supernovae ever assembled has produced new clues about dark energy, the mysterious force driving the universe's accelerating expansion — and some of those c
#science #astronomy #darkenergy -
Two of the Universe's Great Mysteries May Have Their Own Dimension
https://fed.brid.gy/r/https://www.wired.com/story/dark-energy-matter-may-have-own-dimension/
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The Beginnings of Man -Part 1
The nature of Man has evolved over millions of years, changed by environmental conditions, by the response of his instinctual nature and by the actions of his ego. Man’s inner characteristics are altogether different from the ancestral root which governs other species. Why then is he so different?https://tonyaholisticblog.com/2026/08/31/the-beginnings-of-man-part-1/
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Can a #Lumpy #Universe explain #DarkEnergy? : Medium
The #Emerging Link Between #Microplastics and #HeartDisease : Time
#Supplement that #Binds to #Microplastics may remove them from our #Body : New Sci
Latest #KnowledgeLinks
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A DESI Milestone
Yesterday the Open Journal of Astrophysics published a paper by Porredon et al which will feature in the usual Saturday round-up. That paper, which is based on the First Data Release from the Dark Energy Spectroscopic Instrument (DESI) reminded me that I should mention that DESI recently reached an amazing milestone – it has now mapped the positions and redshifts of 47 million galaxies and quasars! There is a full press-release about this achievement here.
Here’s a little video showing how the survey works:
https://www.youtube.com/watch?v=6H3diAK_KIc
There are more videos and other graphics in the press release.
Here’s a nice picture showing a thin slice through the full survey that reveals the characteristic “cosmic web” of the large-scale structure of the Universe in all its glory:
This progress is great, but it really makes me feel old. Forty years ago, in 1986, I had just started my PhD. The state-of-the-art galaxy redshift survey slice then is shown in this plot, from de Lapparent et al 1986 (ApJLett 302, L1), one of the first papers I read as a research student (I got it in 1985 as a preprint), which contains just 1,100 galaxies:
It is worth mentioning that although DESI has now covered its original target area, it will continue until 2028. You can never have too many galaxy redshifts!
#CosmicWeb #Cosmology #DarkEnergy #DarkEnergySpectroscopicInstrument #DESI #GalaxyRedshiftSurveys -
NOIRLab image of the week
Gemini North Under a Blanket of Airglow
Release date: Feb. 26, 2025
Full credits and details: https://noirlab.edu/public/images/iotw2509a/I took the liberty to upload its panorama version in this interactive 360° app, give it a spin, it's beautiful: https://www.360cities.net/image/gemini-north-under-a-blanket-of-airglow-360-panorama/vr
#Astronomy #NOIRLab #MaunaKea #stars #milkyway #photography #astrophotography #airglow #nightskyphotography #darkenergy #Hawaii #GeminiNorth #telescope #science #STEM #astrodon #360panorama #360pano
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Cosmology Talks: Recent DESI Power Spectrum Results
Some weeks ago I posted an item about recent results that have emerged from the DESI (Dark Energy Spectroscopic Instrument) Collaboration. I have been a bit busy since then but I just saw that there is one of those Cosmology Talks about these results which I thought I would pass on. The contributors are Arnaud de Mattia, Hector Gil-Marín and Pauline Zarrouk and they are talking about the analsysis they have done using the “full shape” of the galaxy power spectrum. It’s quite a long video, but very illuminating.
https://www.youtube.com/watch?v=-2mlU-YzEbw
#Cosmology #CosmologyTalks #DarkEnergy #DarkEnergySpectroscopicInstrument #DESI #Physics
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Great Nature News Feature article on the recent DESI Survey results on dark energy
With a final quote by Jim Peebles: “I find it very difficult to imagine that ΛCDM is the end of the story. It’s too simple.”
https://www.nature.com/articles/d41586-024-01273-4
#Cosmology #DarkEnergy #ΛCDM #JimPeebles #DESI #survey #DESIsurvey #BAO #BaryonAcousticOscillations #galaxies #astronomy #astrophysics #astrodon #Nature #news #science
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CW: Long List of Space-related Hashtags & Handles
Space
Physical Sciences
#Astronomy #AstroPhysics #CosmologyGeneral
#AsteroidMining #Asteroids #AsteroidThreat #Astrodon #Astronomers #AstronomyMastodon #AstroPhotography #AstroTuesday #BlackHole #BlackHoles #CelestialBodyLanding #ClearSkies #Comet #Comets #DarkEnergy #DarkMatter #DeepSky #DSOC (Deep Space Optical Communications) #Exoplanets #Galaxy #Galaxies #Gravity #GravitationalWaves #HallEffectThruster #HumanSpaceflight #HumanSpaceflightBasics #HumanSpaceflightHealth #HumanSpaceflightSecurity #ISRU (in situ resource utilization) #LaunchCost #Lunar3dPrinting #MoonMining #NightSky #Observatory #Planetarium #PlanetsryScience #PrivateSpaceflight #Pulsars #Quasars #ReusableLaunchVehicle #RocketEngine #RocketScience #SatelliteImprovement #SatelliteInternetAccess #Satellites #SBSP (Space-based Solar Power) #SmallSat #SolarPhysics #Space #SpaceAgency #SpaceCommunication #SpaceCompany #SpaceCraft #SpaceColonization #SpacecraftComparison #SpacecraftPropulsion #SpaceDebris #Spacedon #SpaceEnergy #SpaceEvent #SpaceExploration #SpaceFood #SpaceForce #SpaceHabitat #SpaceHistory #SpaceHotel #SpaceIndustry #SpaceInfrastructure #SpaceLogistics #SpaceMaintenance #SpaceMastodon #SpaceMining #SpaceNavigation #SpacePhotography #SpacePlants #SpacePolitics #SpacePort #SpaceRegulation #SpaceRobot #SpaceScience #SpaceSciFi #SpaceShip #SpaceScience #SpaceStation #SpaceSuit #SpaceTelescope #SpaceTourism #SpaceWelding #SpaceX #StarGazing @starrytimepod #TimeToOrbit #UniverseOrganisations
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#Artemis (#NASAArtemis) #BepiColombo #Cassini COBE #Euclid #EuclidMission #EuropaClipper #Hayabusa2 #InternationalSpaceStation (#ISS) JupiterIcyMoonExplorer (#Juice) #JuiceMission #Juno #Gaia #MMX #Magellan #Voyager1 #Voyager2Space Telescopes
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#Arecibo 🇵🇷 #AtacamaLargeMillimeterArray (#ALMA) 🇨🇱 #CerroTololo 🇨🇱 #EuropeanSouthernObservatory (#ESO) 🇩🇪 #Haleakala 🇺🇸 #Herschel (#WHT) 🇮🇨 #Keck 🇺🇸 #KittPeak 🇺🇸 #LIGO 🇺🇸 #MaunaKea 🇺🇸 #Paranal 🇨🇱 #Parkes 🇦🇺 #RoqueDeLosMuchachos 🇪🇸 #SquareKilometreArrayObservatory (#SKAO) 🇦🇺 #VeryLargeTelescope (#VLT) 🇨🇱Mastodon Observatories
Abbey Ridge Observatory 🇨🇦 @abbeyridgeobs
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DGMc @Astrobum
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Kreegan99 @kreegan99
Landru79 @Landru79
Loran Hughes @WestwoodAstro
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Roger Sliva @[email protected]
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#Sun #SolarCorona
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• #Moon #Lunar
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#Andromeda (#M31)
#Pleiades (#M45) -
Congratulations to DESI (Dark Energy Spectroscopic Instrument) for their first detection of the baryon acoustic oscillations (BAO) signal using early data.
https://arxiv.org/abs/2304.08427
#universe #cosmology #bao #desi #survey #desisurvey #darkenergy #astronomy #astrophysics #astrodon #space #science #research
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Ya'll, I made a planetarium movie!!
It's about mapping the universe with DESI and includes a flight through the real positions of 14 million galaxies. For anyone without access to a planetarium, here's a flat version:
https://youtu.be/bYKUb05mnPk#astronomy #scicomm #cosmology #astrofun #science #ScienceEd #ScienceEngagement #darkenergy #film
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The DESI Peculiar Velocity Survey, the largest survey of galaxies peculiar velocities planned to date. Great stuff for the future of mapping the universe with cosmic flows!
https://arxiv.org/abs/2302.13760More on DESI the Dark Energy Spectroscopic Instrument: https://www.desi.lbl.gov/
#universe #cosmology #cosmicflows #cosmography #desi #survey #desisurvey #darkenergy #astronomy #astrophysics #astrodon #space #science #research
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#AlanGuth - What Happens in the Far Far #Future ?
https://www.youtube.com/watch?v=0dOiOgr57iU&ab_channel=CloserToTruth
#Science #Physics #Cosmology #Astrophysics #Astronomy #BigBang #Inflation #BigBangTheory #InflationTheory #EternalInflation #ChaoticInflation #FarFuture #PocketUniverse #PocketUniverses #Multiverse #DarkEnergy #CosmologicalConstant #CloserToTruth #RobertKuhn
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An astrophysicist explains the often-misunderstood nature of dark energy - Produced and directed by Corey Eisenstein. Click here for transcript. (vide... - https://arstechnica.com/?p=1861108 #arstechnicavideos #edgeofknowledge #blackholes #darkenergy #darkmatter #paulsutter #science