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pomarede

@pomarede@mastodon.social

cosmographer at university paris-saclay | mapping the universe | co-discoverer of

#laniakea our home supercluster of galaxies | #dipolerepeller a void contributing to the motion of our galaxy | #coldspotrepeller a void associated to the coldest point of the big bang fossil radiation | #southpolewall a giant galactic filament of the cosmic web | #hooleilana the relic of a baryon acoustic oscillation

https://vimeo.com/pomarede | https://sketchfab.com/pomarede | https://youtube.com/@pomarede

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pomarede, to Cameras
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See the sundial and color swatches of Perseverance in Stereo3D, like if you were on board the . Just let your eyes' line of sight be parallel (not cross-eyed) with left eye in front of left image and right eye in front of right image.

More insights on the sundial and other hidden gems riding aboard : https://www.nasa.gov/centers-and-facilities/jpl/5-hidden-gems-are-riding-aboard-nasas-perseverance-rover/

A more technical description of the calibration targets for the Mastcam-Z : https://mastcamz.asu.edu/mars-in-full-color

pomarede, to Cosmology
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Physics Today covers appreciation post

A Rule for the Cosmos (2017)

Feature article by Will J. Percival on Baryon Acoustic Oscillations as a Cosmological Ruler
https://doi.org/10.1063/PT.3.3789

#cosmology #physics #physicstoday #cover #covers #BAO #baryon #acoustic #oscillations #galaxies #darkenergy #acousticwaves #waves #universe #origin #telescopes #leptons #baryons #astronomy #astrophysics #astrodon #science #STEM

pomarede, to random
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A selection of eclipses that made the cover of Nature and Science Magazine

Partial eclipse of the sun, New York, 2 October 1959. The picture was taken over Manhattan

https://www.science.org/toc/science/130/3383

pomarede,
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1973, waiting for the Eclipse

pomarede,
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The historic flight of Concorde chasing the eclipse

pomarede,
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pomarede,
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A new generation of solar eclipse research

On the cover, a composite of 25 images showing the east limb of the Sun during the total solar eclipse of 1 August 2008, observed from Mongolia.

https://nature.com/nature/volumes/459/issues/7248

pomarede,
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Six centuries of solar eclipse art.

Solar Eclipse, 1932, by Howard Russell Butler

https://www.nature.com/nature/volumes/508/issues/7496

pomarede, to photography
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Concorde + Solar Eclipse = stunning shot

© Nature 1975

#eclipse #concorde #photography

pomarede,
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This amazing picture of Concorde 001 racing against the 1973 solar eclipse is credited to Arthur Gibson

https://photo.stackexchange.com/questions/8362

image/jpeg

pomarede, to random
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Folks are waiting for the Eclipse

© Nature 1973

pomarede, to Cosmology
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pomarede, to space
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Ingenuity at Valinor Hills

image acquired by Perseverance on April 4, 2024 (Sol 1110).
Credit: NASA/JPL-Caltech/ASU

#ingenuity #perseverance #ValinorHills #mars #nasa #jpl #caltech #space #astron #rover #photography

pomarede, to Cosmology
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First Results from DESI Make the Most Precise Measurement of Our Expanding Universe

Researchers have used the Dark Energy Spectroscopic Instrument to make the largest 3D map of our universe and world-leading measurements of dark energy, the mysterious cause of its accelerating expansion

https://newscenter.lbl.gov/2024/04/04/desi-first-results-make-most-precise-measurement-of-expanding-universe/

pomarede, to Cosmology
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Cool video of baryon acoustic oscillations in 3D and how they act as a cosmic ruler for measuring dark energy, just released by Berkeley Lab

https://youtu.be/hoOyOAAj4iY?si=vfnScOcjNGgCHQ9P

#cosmology #universe #darkenergy #BAO #baryon #acoustic #oscillations #galaxies #video #3D #youtube #Berkeley #BerkeleyNationalLab #astronomy #astrophysics #astron #science #research #STEM #space

pomarede, to random
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... in case you missed it

Scatophobic Dark Matter
by Gerald Xavier Gilbert-Thorple and Jôsé Jesus Jesus
https://arxiv.org/abs/2404.00690

pomarede, to Astronomy
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Here's an astronomy quiz, published in 1955 in the Worlds of IF Science Fiction pulp magazine.

Check out its free reissue in webzine format: https://worldsofifmagazine.com/webzine-reissues

(answers to the quiz below)

pomarede,
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(see note below about Mu)

pomarede,
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Mu = Mu Cephei a.k.a Herschel's Garnet Star, Erakis, or HD 206936, a red supergiant or hypergiant star in constellation Cepheus
https://en.wikipedia.org/wiki/Mu_Cephei

pomarede, to Cosmology
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in the

SN H0pe: The First Measurement of H0 from a Multiply-Imaged Type Ia Supernova, Discovered by JWST

by Massimo Pascale and co-authors
https://arxiv.org/abs/2403.18902

Their result agrees with other local universe measurements, increasing evidence of the Hubble tension.

pomarede, to Astronomy
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The Darkest Galaxy? Discovery of the Faintest Milky Way Satellite

https://www.cfht.hawaii.edu/en/news/DarkGalaxy/

📷 Hidden in this deep sky image (left) is a truly miniscule group of stars (right), bound together by their own gravity (and maybe even dark matter!), in orbit around the Milky Way Credit: CFHT/S. Gwyn (right) / S. Smith (left).

pomarede, to Geology
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Rubin Crater

a crater of the Moon has been officially named in honor of astronomer Vera Rubin

It is located in the lunar south polar region of high research and exploration interest.

https://planetarynames.wr.usgs.gov/Feature/16273
Credit infographics: USGS Astrogeology

#VeraRubin #RubinCrater #crater #Moon #TheMoon #geology #astrogeology #USGS #news #astronomy #astrodon #space #science #STEM #astronomer

pomarede, to Astronomy
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A new image from the Event Horizon Telescope (EHT) collaboration has uncovered strong and organized magnetic fields spiraling from the edge of the supermassive black hole Sagittarius A* (Sgr A*).

https://eventhorizontelescope.org/blog/astronomers-unveil-strong-magnetic-fields-spiraling-edge-milky-way%E2%80%99s-central-black-hole

pomarede, to space
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pomarede,
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Cosmic Strings, and their inprint on the Cosmic Microwave Background radiation, on the cover of this 1984 issue of Nature.

Featuring a paper by Nick Kaiser and Albert Stebbins
https://nature.com/articles/310391a0

... and a News & Views article by Craig Hogan
https://www.nature.com/articles/310365a0

#CosmicStrings #Cosmology #CMB #cosmic #microwave #background #radiation #EarlyUniverse #universe #NickKaiser #AlbertStebbins #CraigHogan #astronomy #astrophysics #astrodon #science #research #STEM #nature #cover #naturecover

pomarede,
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