#astrophysics — Public Fediverse posts

Rosetta Target

This image of comet 67P/Churymov-Gerasimenko was taken on March 21, 2014, by the narrow-angle camera of the Rosetta spacecraft Optical, Spectroscopic and Infrared Remote Imaging System OSIRIS.

More: https://images.nasa.gov/details/PIA17795
Credit: ESA Copyright: 2014 MPS for OSIRIS-Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

#comet #rosetta #astrodon #astronomy #astrophotography #astrophysics

Farewell Rosetta: ESA Mission to End on Comet Surface

This view shows Comet 67P/Churyumov-Gerasimenko as seen by the OSIRIS wide-angle camera on ESA's Rosetta spacecraft on September 29, 2016, when Rosetta was at an altitude of 14 miles (23 kilometers). The European Space Agency's (ESA) Rosetta mission will co...

More: https://images.nasa.gov/details/PIA21068
Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

#comet #rosetta #astrodon #astronomy #astrophotography #astrophysics

🕳️ oddquark // Black Hole Watch — 2026-11-08

A supermassive black hole's glowing accretion disc launches winds powerful enough to reshape its entire host galaxy. A singularity smaller than a solar system is sculpting thousands of light-years of stars and gas. Mind. Blown. 🌌

🔗 https://www.esa.int/fi/media/strong-black-hole-winds-reshape-a-galaxy-en-371352

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

Blue Origin says it is building a higher-performing rocket engine at 1/4 the cost. Via @arstechnica #Space #Astrophysics #OrbitalMechanics #Astronomy #RocketScience 🚀 🌌 ☄️ 🛰️

Blue Origin says it is buildin...

Neptune - Dark Feature

This clear filter image was acquired by NASA Voyager 2 on Aug. 14, 1989. The image shows a dark feature extending westward left and northward up toward the equator from the Great Dark Spot GDS.

More: https://images.nasa.gov/details/PIA01992
Credit: NASA/JPL

#neptune #voyager #astrodon #astronomy #astrophotography #astrophysics

Pluto Methane Snowcaps on the Edge of Darkness context

This area is south of Pluto's dark equatorial band informally named Cthulhu Regio, and southwest of the vast nitrogen ice plains informally named Sputnik Planitia. North is at the top; in the western portion of the image, a chain of brig...

More: https://images.nasa.gov/details/PIA21025
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#pluto #newhorizons #astrodon #astronomy #astrophotography #astrophysics

Hera spacecraft photographs asteroid from 37 miles away. Via @popsci #Space #Astrophysics #OrbitalMechanics #Astronomy 🚀 🌌 ☄️ 🛰️

Hera spacecraft photographs as...

First tests with modified initial perturbations of ordinary and dark matter, compared to standard LCDM, which also takes into account the perturbations produced by primordial magnetic fields (ongoing work in collaboration with the Trieste group at SISSA which is leading this, e.g. https://arxiv.org/pdf/2610.00485).
Notice how the extra perturbations induced by B-fields (3nG here - on the high side) can speed up the initial collapse of cosmic structures, as predicted.
#Cosmomag #astronomy #astrophysics

The Universe Will Not Get Destroyed by False Vacuum After All. Via @whatdamath #Space #Astrophysics #OrbitalMechanics #Astronomy 🚀 🌌 ☄️ 🛰️ youtu.be/9eTMlHxSXD0?...

The Universe Will Not Get Dest...

Farewell Shot of Rosetta by Philae Lander

The Philae lander of the European Space Agency Rosetta mission took this parting shot of its mother ship, Rosetta, shortly after separation on Nov. 12, 2014. The image was taken with the lander CIVA-P imaging system.

More: https://images.nasa.gov/details/PIA18870
Credit: Copyright: ESA/Rosetta/Philae/CIVA

#comet #rosetta #astrodon #astronomy #astrophotography #astrophysics

Our Sun’s Undiscovered Stellar Nemesis Is Still Out There, Says Physicist

https://www.universetoday.com/articles/our-suns-undiscovered-stellar-nemesis-is-still-out-there-says-physicist

#astronomy #cosmology #astrophysics

Pluto: A Global Perspective

NASA New Horizons mission science team has produced this updated panchromatic black-and-white global map of Pluto. The map includes all resolved images of Pluto surface acquired between July 7-14, 2015.

More: https://images.nasa.gov/details/PIA20658
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#pluto #newhorizons #astrodon #astronomy #astrophotography #astrophysics

The Youngest Crater on Charon?

NASA's New Horizons scientists have discovered a striking contrast between one of the fresh craters on Pluto's largest moon Charon and a neighboring crater dotting the moon's Pluto-facing hemisphere. The crater, informally named Organa, caught scientists' atte...

More: https://images.nasa.gov/details/PIA20036
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#charon #newhorizons #astrodon #astronomy #astrophotography #astrophysics

Neptune False Color Image of Haze

This false color photograph of Neptune was made from NASA's Voyager 2 images taken through three filters: blue, green, and a filter that passes light at a wavelength that is absorbed by methane gas. Thus, regions that appear white or bright red are those that reflect sunlight before it passes through a large quantity of methane. The im...

More: https://images.nasa.gov/details/PIA00057
Credit: NASA/JPL

#neptune #voyager #astrodon #astronomy #astrophotography #astrophysics

🕳️ oddquark // Black Hole Watch — 2026-11-07

Pulsar timing arrays, using galaxy-sized detectors made of dead stars, just capped how massive supermassive black hole pairs could be at cosmic dawn. We're weighing binary monsters from the early universe through ripples in spacetime itself! 🕳️🌌

🔗 https://www.techtimes.com/articles/330185/20261106/first-gravitational-wave-mass-ceiling-early-black-hole-pairs-pulsars-end-18-year-blind-spot.htm

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

You know the launch market is tough when satellite companies start building rockets. Via @arstechnica #Space #Astrophysics #OrbitalMechanics #Astronomy 🚀 🌌 ☄️ 🛰️

You know the launch market is ...

Rosetta Comet In Action Animation

A short-lived outburst from comet 67P/Churyumov-Gerasimenko was captured by Rosetta's OSIRIS narrow-angle camera on July 29, 2015. The image at left was taken at 13:06 Greenwich Mean Time (GMT) (6:06 a.m. PDT), and does not show any visible signs of the jet. It is very strong in the middle image captured at 13:24 GMT (6:24 a.m. PD...

More: https://images.nasa.gov/details/PIA19867
Credit: ESA/Rosetta/MPS

#comet #rosetta #astrodon #astronomy #astrophotography #astrophysics

Rocket Report: Artemis II literally tore through the atmosphere; New Glenn delay. Via @arstechnica #Space #Astrophysics #OrbitalMechanics #Astronomy 🚀 🌌 ☄️ 🛰️

Rocket Report: Artemis II lite...

I saw parts of the Extremely Large Telescope getting built. Via @drbecky_s #Space #Astrophysics #OrbitalMechanics #Astronomy 🚀 🌌 ☄️ 🛰️ youtu.be/Ss3CPR59gtI?...

I saw parts of the Extremely L...

Rotation and Shape of Rosetta Mission Target Comet

This frame from an animated sequence combined 36 interpolated images of comet 67P/Churyumov-Gerasimenko, each separated by 20 minutes. This comet is the destination for the European Space Agency Rosetta mission in 2014.

More: https://images.nasa.gov/details/PIA18403
Credit: Copyright: ESA/Rosetta/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

#comet #rosetta #astrodon #astronomy #astrophotography #astrophysics

A simulated triple merger between clusters of galaxies, where ordinary matter (colors) also transport fossil cosmic ray electrons (contours) until the entire intracluster medium of the final cluster of galaxies is rich in cosmic rays
ENZO-MHD simulation (run at CINECA) combined with a post-processing treatment of cosmic rays using #Julialang

#astrophysics #astronomy #science

Now that's a stellar crossover 🤩

We invited Dr. Becky Smethurst to our Headquarters in Germany, where we chatted about cosmic mysteries that could be solved with upcoming facilities, like our Extremely Large Telescope in #Chile.

➡️ https://www.youtube.com/watch?v=NI8gwNwHwf0

We also gave her a sneak-peek of some of the ELT components we're building and testing here. Stay tuned for more videos, both in her channel and ours, there's more to come!

#astrodon #astronomy #astrophysics #space #science

Atmospheric Waves

With its Multispectral Visible Imaging Camera MVIC, half of the Ralph instrument, New Horizons captured several pictures of mesoscale gravity waves in Jupiter equatorial atmosphere.

More: https://images.nasa.gov/details/PIA10097
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#jupiter #newhorizons #astrodon #astronomy #astrophotography #astrophysics

Paper day!

Everything You Wanted To Know About The 10 Mpc Volume

by R. Brent Tully and co-authors

https://arxiv.org/abs/2611.07284

#Cosmography #galaxies #Cosmology #Astronomy #Astrophysics #Astrodon #science #news #Hubble #space #telescope

Egal wie oft man Videos mit ihm schaut, ich bin immer wieder erstaunt darüber mit wie viel Begeisterung er an das Thema ran geht und wie verständlich er das auch erklärt. Wäre der Typ damals mein Lehrer gewesen wäre ich heute wohl Astrophysiker. :o

Geht's auch ohne Urknall? Lichtermüdung und statisches Universum | Josef M. Gaßner
https://www.youtube.com/watch?v=WONvwCp-DKM

#Astrophysics #Universe

A fascinating deep observational dive into the innermost (10Megaparsec)^3 volume around the Milky Way, today on #astroph by B.Tully and collab.
https://arxiv.org/pdf/2611.07284
with an accurate census of the positions, velocities and properties of all local galaxies, and nice volumetric 3D rendering of the local dynamics.
#astrophysics #astronomy #science

https://www.europesays.com/ie/768943/ Dead stars could break one of physics’ most famous limits #Astrophysics;Stars;Cosmology;DarkMatter;SpaceExploration;Nebulae;Astronomy;SpaceTelescopes #Éire #IE #Ireland #Science

LORRI Looks Back

NASA New Horizons had an exciting flyby encounter with Jupiter in early 2007, and the spacecraft has been rapidly moving away from the giant planet ever since.

More: https://images.nasa.gov/details/PIA07934
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#jupiter #newhorizons #astrodon #astronomy #astrophotography #astrophysics

https://www.europesays.com/conflicts/70062/ NASA’s Swift Observatory Re-Entered Atmosphere #astrophysics #GoddardSpaceFlightCenter #NeilGehrelsSwiftObservatory #TheUniverse #USSpaceForce

Dead stars could break one of physics’ most famous limits

Some of the universe’s dead stars may be capable of growing far more massive than a famous limit…
#NewsBeep #News #Science #Astrophysics;Stars;Cosmology;DarkMatter;SpaceExploration;Nebulae;Astronomy;SpaceTelescopes #CA #Canada
https://www.newsbeep.com/ca/960079/

https://www.europesays.com/ie/768745/ Dead stars could break one of physics’ most famous limits #Astrophysics;Stars;Cosmology;DarkMatter;SpaceExploration;Nebulae;Astronomy;SpaceTelescopes #Éire #IE #Ireland #Science

🕳️ oddquark // Black Hole Watch — 2026-11-06

Pulsars as a galaxy-sized gravitational wave detector, now putting the first mass limits on supermassive black hole pairs in the early universe! Cosmic clocks ticking out spacetime ripples from monster binaries. My brain is melting 🤯🕳️

🔗 https://phys.org/news/2026-11-pulsars-mass-limits-supermassive-black.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

Something Bizarre Has Been Hiding Behind the Milky Way. Via @whatdamath #Space #Astrophysics #OrbitalMechanics #Astronomy 🚀 🌌 ☄️ 🛰️ youtu.be/Xj-EtAPePAw?...

Something Bizarre Has Been Hid...

Ariel at Voyager Closest Approach

This picture is part of NASA Voyager 2 imaging sequence of Ariel, a moon of Uranus taken on January 24, 1986. The complexity of Ariel surface indicates that a variety of geologic processes have occurred. http://photojournal.jpl.nasa.gov/catalog/PIA00037

More: https://images.nasa.gov/details/PIA00037
Credit: NASA/JPL

#ariel #voyager #astrodon #astronomy #astrophotography #astrophysics

Crater Rays on Ganymede

Crater Rays on Ganymede http://photojournal.jpl.nasa.gov/catalog/PIA00334

More: https://images.nasa.gov/details/PIA00334
Credit: NASA/JPL/USGS

#ganymede #voyager #astrodon #astronomy #astrophotography #astrophysics

This Supernova Left Behind a Star That Shouldn't Exist. Via @whatdamath #Space #Astrophysics #OrbitalMechanics #Astronomy 🚀 🌌 ☄️ 🛰️ youtu.be/yNStnPhsM8o?...

This Supernova Left Behind a S...

Ammonia Clouds on Jupiter

In this movie, put together from false-color images taken by the New Horizons Ralph instrument as the spacecraft flew past Jupiter in early 2007, show ammonia clouds appearing as bright blue areas as they form and disperse.

More: https://images.nasa.gov/details/PIA09922
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#jupiter #newhorizons #astrodon #astronomy #astrophotography #astrophysics

Interesting on #astroph (yesterday)
"The formation of the first cosmic structures in hybrid Milgromian
cosmology" by Ondro & Samaras https://arxiv.org/pdf/2611.03770
where they employ RAMSES and POR (Phantom of Ramses) simulations to study structure formation in standard LCDM cosmology, or with MOdified Netwton Dynamics (MOND) with massive neutrinos.

#astrophysics #astronomy #science